Chicago has a problem until the year 2083. @standupmaths

Stand-up Maths You absolutely must check out the companion Climate Town video: youtu.be/fDx6no-7HZE

Huge thanks to Rollie Williams, Nicole Conlan, Matt Nelson and the whole Climate Town team. We had an unreasonable amount of fun planning and filming these videos. You should subscribe to their channel: youtube.com/@ClimateTown What, you already are? Well unsubscribe and resubscribe you fool.

Office Of The Inspector General, City of Chicago, Report Of Inspector General's Findings And Recommendations: An Analysis of the Lease of the City's Parking Meters. igchicago.org/wp-content/uploads/2011/03/Parking-Meter-Report.pdf

Chicago Parking Meters, Llc: Financial Statements (With Independent Auditors' Report Thereon). chicago.gov/content/dam/city/depts/fin/supp_info/AssetLeaseAgreements/Audited%20Financial%20Statements/CPM_2021_Audited_Statements.pdf

Want to do something about USA parking policy? Check out Climate Town's buddies at Climate Changemakers. They have put together a playbook on how to take action on minimum parking laws: climatechangemakers.org/playbook-parking-mandates

Huge thanks to my Patreon supporters. They made this video possible by funding a lot of hotdogs. Take the deal here: patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Stand-up Maths crew:
Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced and light reflector by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

Climate Town crew:
Host, Head Writer, Editor: Rollie Williams
Executive Producers: Rollie Williams & Ben Boult & Matt Nelsen & Nicole Conlan
Writers: Nicole Conlan & Matt Nelsen
Directors: Matt Nelsen & Ben Boult
Cinematographers: Matt Nelsen & Ben Boult
Assistant Editor: Laura Conte
Fact Checker: Canute Haroldson
Animator: Ian MK Cessna

Yes, I ate every single one of those hotdogs.

updated 11 months ago

Chicago has a problem until the year 2083.

Stand-up Maths 2023-10-30 | You absolutely must check out the companion Climate Town video: youtu.be/fDx6no-7HZE

Huge thanks to Rollie Williams, Nicole Conlan, Matt Nelson and the whole Climate Town team. We had an unreasonable amount of fun planning and filming these videos. You should subscribe to their channel: youtube.com/@ClimateTown What, you already are? Well unsubscribe and resubscribe you fool.

Office Of The Inspector General, City of Chicago, Report Of Inspector General's Findings And Recommendations: An Analysis of the Lease of the City's Parking Meters. igchicago.org/wp-content/uploads/2011/03/Parking-Meter-Report.pdf

Chicago Parking Meters, Llc: Financial Statements (With Independent Auditors' Report Thereon). chicago.gov/content/dam/city/depts/fin/supp_info/AssetLeaseAgreements/Audited%20Financial%20Statements/CPM_2021_Audited_Statements.pdf

Want to do something about USA parking policy? Check out Climate Town's buddies at Climate Changemakers. They have put together a playbook on how to take action on minimum parking laws: climatechangemakers.org/playbook-parking-mandates

Huge thanks to my Patreon supporters. They made this video possible by funding a lot of hotdogs. Take the deal here: patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Stand-up Maths crew:
Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced and light reflector by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

Climate Town crew:
Host, Head Writer, Editor: Rollie Williams
Executive Producers: Rollie Williams & Ben Boult & Matt Nelsen & Nicole Conlan
Writers: Nicole Conlan & Matt Nelsen
Directors: Matt Nelsen & Ben Boult
Cinematographers: Matt Nelsen & Ben Boult
Assistant Editor: Laura Conte
Fact Checker: Canute Haroldson
Animator: Ian MK Cessna

Yes, I ate every single one of those hotdogs.

How can a jigsaw have two distinct solutions?

Stand-up Maths 2024-09-14 | Learn more about Jane Street’s internship opportunities: jane-st.co/SUM-internships

Check out Steve’s video: youtu.be/FMRi6pNAoag

This is Ryan’s Diffusion Illusions site: diffusionillusions.com

And here is the full “Diffusion Illusions: Hiding Images in Plain Sight” paper by Ryan Burgert, Xiang Li, Abe Leite, Kanchana Ranasinghe and Michael S. Ryoo. diffusionillusions.com/assets/diffusion_illusions.pdf

Download of the jigsaw: dropbox.com/scl/fi/rennmoqgzjdup5uof7qna/jigsaw_jumbled.pdf?rlkey=u4v18cwbvut672hqx895tqga0&dl=0

Here’s the layout of the different edge types: dropbox.com/scl/fi/dvylpftby1uzlrmpdt1mp/matt-jigsaw-layout.pdf?rlkey=512hqdr9y9h5mxjonhxiwhsy4&dl=0

Huge thanks to my Patreon supporters. They provide all the valid solutions I need. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Alex Genn-Bash
Editing by Gus Melton
Written and performed by Matt Parker and Steve Mould
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson
Dice on loan from the Bec Hill collection

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com

The unexpected probability result confusing everyone

Stand-up Maths 2024-09-10 | Secure your privacy with Surfshark! Enter coupon code standupmaths for an extra 4 months free at surfshark.com/standupmaths

Thanks to Dylan from Seattle for sending this amazing maths fact to me. You can see an archive of their ChatGPT conversation here: chatgpt.com/share/00ed003b-8be6-4756-92b3-de91454ab3f2

Thanks to Grant from 3blue1brown for putting actual work aside and talking probabilities with me on a long train journey. You see see a longer version of this animations here: youtube.com/3blue1brown

This was my dice video from a few years back, "The unexpected logic behind rolling multiple dice and picking the highest." youtube.com/watch?v=X_DdGRjtwAo

Satisfy your D36 and all your other dice needs over at Maths Gear: mathsgear.co.uk/products/d36-dice

Also on the Dice Lab if you're USA based. mathartfun.com/d141518.html

Huge thanks to my Patreon supporters. They keep me in dice. So many dice. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!
- PS Never say die.

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson
Throwing Dice at Matt: also by Alex Genn-Bash
Some dice on loan from the Bec Hill collection

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com

Are accurate election predictions luck or skill?

Stand-up Maths 2024-08-31 | Go to https://ground.news/standup for a data-driven, objective way to stay fully informed on the issues most important to you. Save 40% on the Ground News unlimited access Vantage plan with my link.

Thanks to Jop Schaap for analysing how lucky I was. See their report here: dropbox.com/scl/fi/yrzp0z3r2u4dgistmtor1/Lucky_predictions_Jop_Schaap.pdf?rlkey=c0ctkocele9sso7kh46y73kcp&dl=0

If you'd like to see my spreadsheet, here it is. The percentages and values were all generated by some terrible python code I hand-wrote myself. dropbox.com/scl/fi/e6wfyb9382gr6ihnvyp7z/Lucky_predictions_Matt-spreadsheet.xlsx?rlkey=95lj0l1c59meo1yrxq0hxjgol&dl=0

Thanks to Evan Harris for chatting about election stats with me and kindly recording a video. Here's the big table of data they made: dropbox.com/scl/fi/3ahu3g5gouaseb7ch7f0s/Mid-Sussex-Local-Election-Results.docx?rlkey=g22ko1y5h8sb414vrfgfpvf6t&dl=0

Ongoing thanks to Count Binface, Tom Wilson and Dave Rowntree who have helped hugely with this video series.

Part 01: youtu.be/zDLxgEquxA0
Part 02: youtu.be/K-hdJIWsK3A

Massive thanks to my Patreon supporters. I'm definitely lucky to have you all. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Matt Parker
Editing by Gus Melton
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Opening titles by Alex Genn-Bash
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com

We shot a YouTube video about film formats on 35mm film

Stand-up Maths 2024-08-26 | If you'd like a piece of the film: support me on Patreon. patreon.com/standupmaths

Then sign up to get the physical film here: https://forms.gle/eNc46SgJW9bn3RaF6

If you'd like to watch every last frame we shot, the complete scan of every roll of film is on my second channel. youtu.be/99ru8jtD7-4

Comment below if you think there is a preexisting video which would beat me as the first 35mm filmed-as-a-YouTube-video video.

Huge thanks to Keslow Camera for letting us use their fantastic film cameras. They hire all sorts of great stuff: keslowcamera.com

Much appreciation to Truman Hanks who suggested the video idea, organised the film, shot the video and did the edit. Check out his film-loading and cinematography work: trumanhanks.com

Thanks to Bec Hill for helping out with the filming on the day. All the props were lovingly hand-made by Bec using stationery we found around Sam Kieffer's place.

My podcast with Bec: podcasters.spotify.com/pod/show/a-problem-squared
Bec's podcast with Sam, which they should have been working on instead of helping me make giant models of film: podcasters.spotify.com/pod/show/enemy-in-paris

Thanks again to Dan Ming for setting us up with Keslow. Read about their work here in ICG Magazine. issuu.com/icgmagazine/docs/may2023/16

Development was by FotoKem and the digital scan of the film was done by the lovely The Negative Space. https://thenegative.space/

Huge thanks to my Patreon supporters. They keep my reels turning. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Truman Hanks
Sound mix by Peter Doggart
Written and performed by Matt Parker
Props by Bec Hill
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com

The Bingo Paradox: 3× more likely to win

Stand-up Maths 2024-08-21 | Details on where you can buy Love Triangle in the USA: bit.ly/3wCTesR

Or if you just want it from Amazon, this is my affiliate link: amzn.to/4fy30Ph

For people in Europe, signed UK copies are still available on Maths Gear: mathsgear.co.uk/products/love-triangle-by-matt-parker-signed

The box set you should not buy:
https://achievefulfilment.onwarehouse.app/preorders/new?campaign_id=ymgvcjy

Paul Catherall shop:
paulcatherall.com/shop

And now for some actual links that pertain to the video itself.

The Bingo Paradox by Arthur Benjamin, Joseph Kisenwether & Ben Weiss
tandfonline.com/doi/abs/10.4169/mathhorizons.25.1.18
Also here: http://digitaleditions.walsworthprintgroup.com/publication/?i=432359&article_id=2856994&view=articleBrowser

10,000 Stand-up Maths bingo cards: dropbox.com/scl/fo/t8l5pl23axozpjidbdun7/AFzNqCra3HfowHTtSuluHO0?rlkey=b4m5vp13b4fdug6521ijb8unw&dl=0

10,000 Love Triangle bingo cards: dropbox.com/scl/fo/zy93kfqqy2rb4n4wstgu4/AM0E6heZnvFW6cNFek7xG7U?rlkey=nkc9d71dw4bp4r01dp8dhos6p&dl=0

I heard a rumour you should listen to the podcast A Problem Squared. open.spotify.com/show/7Hp5QDk9PsWyEXtcsDz34a?si=9d0a481401de443a

Huge thanks to my Patreon supporters. They took very little convincing to make fun of me via the medium of bingo card suggestions. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Additional performance by Skylab the Dog
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson
Dice on loan from the Bec Hill collection

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

The search for the biggest shape in the universe.

Stand-up Maths 2024-08-16 | Love Triangle sweepstakes are open until Monday August 19th: sites.prh.com/love-triangle-sweepstakes

Details on where you can pre-order/buy Love Triangle: bit.ly/3wCTesR
Or if you just want it from Amazon, this is my affiliate link: amzn.to/4fy30Ph

For people in Europe, signed UK copies are still available on Maths Gear: mathsgear.co.uk/products/love-triangle-by-matt-parker-signed

“Search For Largest Polyhedra” by Donald Grace
ams.org/journals/mcom/1963-17-082/S0025-5718-63-99183-X/S0025-5718-63-99183-X.pdf

Thanks to Bill Hedges at Cosmic Films Studio in Nebraska, USA for having us to film our sci-fi adventure. Check out Bill’s Cosmic Cat series: youtube.com/@williamhedges1519

Thanks to Laura Taalman for 3D printing the fantastic shapes for me. She's a Professor of Mathematics at James Madison University. mathgrrl.com

Thanks to Roger Antonsen, for testing the local maxima of the Grace shape for this video. Roger sadly passed away earlier this year. His department at the University of Oslo have published a memorial page to celebrate him: https://www.mn.uio.no/ifi/personer/minneside.html

Geogebra model of the Grace's Shape made by Sam Hartburn.

Much appreciation to Donald's children who talked to me about late nights spent with their father watching a computer crunch away at some math.

Huge thanks to my Patreon supporters. I could maximise the occupancy of a unit sphere with my gratitude. patreon.com/standupmaths

CORRECTIONS
- 00:23 I say "August 22" which is wrong: this Tuesday is August 20. Please don't tell my publishers I got that wrong.
- At 16:50 I say "eight times" which is completely wrong and not part of the formula. No idea what was going on there. The onscreen value (and everything else I say) is correct.
- Let me know if you spot anything else!

Filming and editing by Alex Genn-Bash
Additional footage by Bill Hedges
Written and performed by Matt Parker
Voiceover by Gemma Arrowsmith
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson
On-set entertainment by Cosmic Cat (and kittens)

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com

Search for the mythological Klein-ing Frame

Stand-up Maths 2024-08-08 | Find out more about Jane Street's internships in Hong Kong and opportunities around the world! jane-st.co/hkginternship-sum

Visit the Klein-ing Frame and the rest of the park yourself: http://www.infopia.net/create/index.html

This is the site and map I originally found.
Site: polyhedra.cocolog-nifty.com/blog/2019/04/post-87185f.html
Map: http://www.infopia.net/create/images/route1.pdf

Check out the original Tweet: https://x.com/MathematicsUCL/status/1358532581113946114

Huge thanks to David Brooks for being our guide. More on their physics work at JAXA and elsewhere here: davidbrooks.info/about

If you'd like to know more about ISAS/JAXA, their site is here: isas.jaxa.jp/en
Anyone interested in Hinode can look at the MSSL website here: solarb.mssl.ucl.ac.uk/SolarB

Huge thanks to my Patreon supporters. Without them I would be orientation-reversed. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Alex Genn-Bash
Editing by Gus Melton
Written, performed and additional filming by Matt Parker
Local translation services by Dave Brooks
Attending a conference in Japan to justify the trip by Lucie Green
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

The Greenwich Meridian is in the wrong place

Stand-up Maths 2024-08-02 | Pre-order Love Triangle anywhere, register for the sweepstakes here: sites.prh.com/love-triangle-sweepstakes

Details on where you can pre-order/buy Love Triangle: bit.ly/3wCTesR

Or if you just want it from Amazon, this is my affiliate link: amzn.to/4fy30Ph

For people in Europe, signed UK copies are still available on Maths Gear: mathsgear.co.uk/products/love-triangle-by-matt-parker-signed

Huge thanks to Steve Mould for joining me in this video! Check out Steve's channel, I assume he can use some extra subscribers: youtube.com/stevemould

Thanks to the Royal Observatory, Greenwich for letting us come in to see all the lines and their respective telescopes. You should visit! It's in London. rmg.co.uk/royal-observatory

Much appreciation to my Patreon supporters. They keep me on the correct line. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Steve Mould performed by Steve Mould
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com

Surprise results I found as an election Count Agent

Stand-up Maths 2024-07-12 | Count Binface is on tour around the UK in September and October 2024. Details and tickets here: aegpresents.co.uk/event/count-binface Channel Binface here: youtube.com/@realcountbinface

Tickets for An Evening of Unnecessary Detail NYC (and other London shows) here: festivalofthespokennerd.com/tickets

This is the website I scraped the election data from: whocanivotefor.co.uk/elections/parl.2024-07-04/uk-parliamentary-general-election

But as of around 12 July 2024 it will be officially available here: commonslibrary.parliament.uk/research-briefings/cbp-10009

This is the polling data website I talk about: thisvotecounts.co.uk

Thanks to all the candidates who took time to help make these videos: Tom Wilson, Dave Rowntree and Count Binface. Plus all the many people who during a long night working at the counting centre, still kindly chatted with me and answered my questions.

Huge thanks to my Patreon supporters. Without them I wouldn't be first past the post. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Matt Parker
Additional footage by the Count Binface Party
Editing by Gus Melton
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

UK Election charts are a nightmare

Stand-up Maths 2024-07-03 | Vote Count Binface for Bindependence Day! youtu.be/YwnacH0VNhQ?si=1wamTebLkBfT_NfU

Make your vote count. thisvotecounts.co.uk

Thanks to Dave Rowntree for taking time out on the campaign trail to help with this video: Dave Rowntree for Mid Sussex daverowntreeformidsussex.com

Thanks to Count Binface to for taking time out from commanding great swaths of our galaxy to peer-pressure me into this video: Count Binface for Richmond and Northallerton countbinface.com

Catch Count Binface on his debut comedy tour across the UK this September/October! http://aegp.uk/Binface

This is the BBC article I showed: “Tactical voting: What to watch out for on leaflets telling you who can win your seat” bbc.co.uk/news/articles/c722gl8rzdro

The excellent More or Less covered bad leaflet charts as well. bbc.co.uk/sounds/play/m00202g3

Watch the rest of Sky News grilling Reform over their 1066 plot. news.sky.com/video/why-did-you-pick-1066-skys-sophy-ridge-questions-richard-tice-on-his-campaign-message-13142125

Excellent video on voting systems by Primer. youtu.be/yhO6jfHPFQU?si=95YjMpxvhJk8ogsa

Here’s my book Love Triangle I keep pointing at: mathsgear.co.uk/products/love-triangle-by-matt-parker-signed

FULL DISCLOSURE: as well as being an official Counting Agent for the Count Binface Party I did also donate my own money to help pay for getting all the flyers printed. The print shop demanded Earth Money and refused to accept Galactic Blemflarcks.

Huge thanks to my Patreon supporters. Even though I don’t think I can legally spend their money on this video. patreon.com/standupmaths

CORRECTIONS
- I had accidentally spelled Earth Money as “Earth Monday” elsewhere in this description. Thank you to everyone who read far enough down to notice! It’s fixed now.
- Let me know if you spot anything else!

Filming by Matt Parker
Editing by Alex Genn-Bash
Written and performed by Matt Parker
Space lasers by Count Binface
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Is pool actually just mathematics?

Stand-up Maths 2024-06-21 | Get a signed first edition of Love Triangle from Maths Gear: mathsgear.co.uk/products/love-triangle-by-matt-parker-signed

All UK options: penguin.co.uk/books/443151/love-triangle-by-parker-matt/9780241505694
All USA options: bit.ly/3wCTesR

Huge thanks to Rollie and Jenn. Check out their videos on the diamond system.
youtu.be/PW_pSnZ1BAk
youtu.be/KBCwU8Uno9A

Rollie's Climate Town videos: youtube.com/@ClimateTown
Rollie is an average pool player: youtube.com/playlist?list=PLqVm2hbVs27MbFKr7IqZMuqgXjvMJ7pa0&si=4gGhuM3KGrr0Y-VH

Jenn's pool videos: tiktok.com/@jenn9mmbarretta
We filmed at Jenn's fantastic venue: Skyline Billiards and Bar. You should go there! skylinebilliards.com

And that Grant guy makes some pretty good math videos: youtube.com/@3blue1brown

Huge thanks to my Patreon supporters. Whenever I bounce off them they give me plenty of spin. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Alex Genn-Bash
Editing by Gus Melton
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson
Playing darts in the background out of focus: Bec Hill

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

The first known maths author

Stand-up Maths 2024-06-13 | Pre-order a signed 1st edition of Love Triangle now: mathsgear.co.uk/products/love-triangle-by-matt-parker-signed
All UK options: penguin.co.uk/books/443151/love-triangle-by-parker-matt/9780241505694
All USA options: bit.ly/3wCTesR

Hugh thanks to the British Museum for getting the papyrus out of storage for me to see. You can watch the other non-papyrus video I made with them over here: youtu.be/WctTJVdsISE

If you want to have a closer look at the maths on the papyrus, there are scans on the British Museum site: britishmuseum.org/collection/object/Y_EA10058

CAN YOU SOLVE IT:
You have to divide 100 loaves between 5 men in such a way that the shares received shall be in arithmetical progression. And that 1/7 of the sum of the largest 3 shares shall be equal to the sum of the smallest 2. What is the difference of the shares?

Huge thanks to my Patreon supporters. They keep my bread fairly divided. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Alex Genn-Bash
Editing by Gus Melton
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

The shape that should be impossible.

Stand-up Maths 2024-06-05 | Get your Sydler-shape limited-edition dust jacket now! mathsgear.co.uk/products/love-triangle-by-matt-parker-signed
Here is the bonus video with all the details: youtu.be/cB18rgH5YaM

See some of you at the Copenhagen Developers Festival, 28 August 2024
cphdevfest.com

Thanks so much to Paul Catherall who made these beautiful prints. paulcatherall.com

If you order Love Triangle on Waterstones you will not get the dust jacket but you can use the use the discount code 1+2+3+4+5+6=21 to get 21 percent off the already discounted price. waterstones.com/book/love-triangle/matt-parker/9780241505694

All UK options: penguin.co.uk/books/443151/love-triangle-by-parker-matt/9780241505694
All USA options: bit.ly/3wCTesR

Matthias Goerner's page about Sydler's shape: unhyperbolic.org/sydler.html

Or see the 3D model directly here: sketchfab.com/3d-models/sydler-pi4-polyhedron-final-70cf6dda7f6545dcb827bcec87fb526b

Henry Segerman's video: youtube.com/watch?v=tH6vLXMaCwQ&ab_channel=HenrySegerman

Robin's 15° shape: sketchfab.com/3d-models/single-angle-15-coloured-8230e145f97c4daba4cfbaf317f0a55b

CONJECTURE DISCLAIMER:
We believe that the "there must exist a single-angle polyhedron for any angle θ with an algebraic sine" conjecture is true but don't have a nice proof. There seem to be all the required parts for the proof in papers by Sydler and Jessen, but it's not fully assembled.

Huge thanks to my Patreon supporters. They keep me orthogonal. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

New 7-direction pencil model discovered!

Stand-up Maths 2024-05-31 | Find out more about Jane Street’s programmes running across the world:
bit.ly/sum-janestreet-programs

Including the WiSE course which is open to self-identifying women and gender-expansive university students and incoming students: janestreet.com/join-jane-street/programs-and-events/wise

Check out KangarooPhysics’ original gif showing the cross-section through the packing arrangment: https://x.com/kangaroophysics/status/1491858072251342850?s=46&t=EVDbN01K_p7T27Gd23R0bw
And Daniel Piker’s amazing 3D model: sketchfab.com/3d-models/rod-packing-7directions-2-e56a6e899b2b4ef4bb458c66343363e4
More detail on rod packing in this paper: journals.iucr.org/paper?S010876730001151X

If you want to watch the extended cut, with every excruciating, pencil-pushing moment included, head over to this video on the second channel: youtube.com/watch?v=EsBqeGtThW8

You can also watch the original "How to build a Hexastix in 72 easy steps" if you just want to build a Hexastix. In 72 easy steps. youtube.com/watch?v=DelH1S32dOg

If you need 85 custom pencils in your life (The 67 you need, plus we've put in a few spares) you can buy a set while stocks last over on Maths Gear. Sorry the set is quite expensive. This is just the cost price I originally paid to get them made. Elastic bands are not included.
mathsgear.co.uk/products/prism-pencils-pack-of-85

Huge thanks to my Patreon supporters. They are as special as a triangular pencil. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
Love Triangle: mathsgear.co.uk/products/love-triangle-by-matt-
parker-signed
All UK options: penguin.co.uk/books/443151/love-triangle-by-parker-matt/9780241505694
All USA options: bit.ly/3wCTesR

The mathematically impossible ball that shouldn’t exist.

Stand-up Maths 2024-05-22 | Sign the petition now! mathsballs.com

Pre-order Love Triangle to read about the Impossi-ball. mathsgear.co.uk/products/love-triangle-by-matt-parker-signed
All UK options: https://www.penguin.co.uk/books/44315...
All USA options: bit.ly/3wCTesR

Check out Jon-Paul's balls: tiktok.com/@jonpaulsballs
Huge thanks to Jon-Paul and Allison for making the ball and inviting us to their studio. 12p.com

Thanks to everyone at Liverpool FC for being so accommodating and friendly.

Tim's home sustainability tech channel: youtube.com/@TimAndKatsGreenWalk
And his foot donut game: stone-baked-games.itch.io/foot-donut-demo

Humble Pi stand-up special is on Maths Gear as a download, and all the other places.
mathsgear.co.uk/products/humble-pi-show
amazon.co.uk/Humble-Pi-Comedy-Maths-Errors/dp/B0CH4WW1L2

This was my original video from 2017: youtube.com/watch?v=btPqKAGyajM
The UK government parliamentary petition and official government response: petition.parliament.uk/archived/petitions/202305petition.parliament.uk/archived/petitions/202305

Huge thanks to my Patreon supporters. This would be impossiball without you. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced by Nicole Jacobus
Maths of the Day music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
New book: mathsgear.co.uk/products/love-triangle-by-matt-parker-signed

When a complicated proof simplifies everything

Stand-up Maths 2024-05-17 | Pre-order Love Triangle on Maths Gear now and get a signed copy! mathsgear.co.uk/products/love-triangle-by-matt-parker-signed
Also, a special book cover if you're fast enough. You'll be fast enough.

All UK options: https://www.penguin.co.uk/books/44315...
All USA options: bit.ly/3wCTesR

Video was inspired by this r/mathematics post and the discussion it lead to: reddit.com/r/mathematics/s/UNJaYMGGtS

Huge thanks to my Patreon supporters. I’m a huge exponent of all of
them, minus none.
patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Alex Genn-Bash
Editing by Gus Melton
Graphics by Sam Hartburn and Matt Parker
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website:
http://standupmaths.com
New book!
mathsgear.co.uk/products/love-triangle-by-matt-
parker-signed

The Minecraft boat-drop mystery

Stand-up Maths 2024-03-30 | Here is camman18's YouTube short about the mystery: youtube.com/shorts/WvyVFSOD-uM?si=yeOzmMj6BD0a0E3c

Huge thanks to Natalie for sending it to me!

This is the bug report Oliver found: bugs.mojang.com/browse/MC-119369?focusedId=804740

Explore floating point errors yourself using the IEEE-754 Floating Point Converter: h-schmidt.net/FloatConverter/IEEE754.html

My previous video about Minecraft: youtube.com/watch?v=8Ko3TdPy0TU

Thanks to my patreon supporters. They keep my this.status = IN_AIR. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Matt Parker
Editing by Gus Melton
Minecraft footage by Oliver Dunk
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
New book! mathsgear.co.uk/products/love-triangle-by-matt-parker-signed
All UK options: https://www.penguin.co.uk/books/44315...
All USA options: bit.ly/3wCTesR

The biggest hand calculation in a century! [Pi Day 2024]

Stand-up Maths 2024-03-13 | Please note down the new value of pi: 3.14159265358979323846264338327950288419716939937510582097494459230781640628620899862803482534211706798214808651328230664709384460955058223176

If you'd like to sign up to hear about future ridiculous maths projects that require volunteers: https://forms.gle/w44THpNJ3jWUPqHy6

Play list of all my previous calculating pi day videos: youtube.com/playlist?list=PLhtC92GarkjyYbxI3-4qzIWIRbZaw4wuP&si=DzWXgnv_vYfDgiLZ

This calculation was paid-for with surplus funding from a previous Stand-up Maths kick-starter. If you'd like to support future projects, you can join me on Patreon. My Patreon supporters keep me irrational. patreon.com/standupmaths

Huge thanks to the Pi-by-hand Committee who spent two years working on this project:
Alex Genn-Bash
Ayliean McDonald - youtube.com/@Ayliean
Ben Sparks - youtube.com/@SparksMaths
Christian Perfect
Deanna Judd
James Grime - youtube.com/@singingbanana
Katie Steckles - youtube.com/@KatieSteckles
Matthew Scroggs - youtube.com/@chalkdustmag
Max Hughes
Nicole Jacobus
Sophie Maclean - bit.ly/Sophie_Numberphile

Thanks to Steve Mould for making sure everything was legit, and only mentioning tau six or so times.

William Shanks was voiced by the excellent Ben Moor: spesh.com/ben

The amazing voice over was provided by the fantastic Gemma Arrowsmith: gemmaarrowsmith.com

CORRECTIONS
- None yet, let me know if you spot anything (other than the final 6).
- Yes, this video was released the day before Pi Day. It's so teachers have a chance to watch it and prepare their Pi Day lessons for the big day.

Filming and editing by Alex Genn-Bash
Animations by William Marler
Written and 'performed' by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
NEW BOOK: mathsgear.co.uk/products/love-triangle-by-matt-parker-signed

Rotation without rotating.

Stand-up Maths 2024-03-08 | Check out Jane Street's excellent Academy of Math and Programming (AMP). bit.ly/3T6gc3n

Jane Street has put together a fun logic puzzle to get folks excited about the AMP program. You don’t need to complete the puzzle to apply – it’s just something fun to get you thinking! Check it out: bit.ly/sum-amp

Here are Andrew Taylors slides on "Rotation with three shears". I saw him give this talk at the MathsJam Gathering 2023. The proof is on page 4. github.andrewt.net/shears

This is a nice introduction to the concept: cohost.org/tomforsyth/post/891823-rotation-with-three

Way more details on the maths behind rotating with shears here: https://www.ocf.berkeley.edu/~fricke/projects/israel/paeth/rotation_by_shearing.html

Oh dang my book: mathsgear.co.uk/collections/books/products/love-triangle-by-matt-parker-signed

Huge thanks to my Patreon supporters. They spin me right round, baby, right round, like a record, baby, right round^3. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Alex Genn-Bash
Editing by Dan Daniel
Written and performed by Matt Parker
Graphics by Matt Parker and Andrew Taylor
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com

The Five Compound Platonic Solids

Stand-up Maths 2024-03-06 | Do check out my video with Adam Savage over on Tested: youtu.be/s_F4uD8wAs0

Yes, I'm back in NYC for An Evening of Unnecessary Detail on Sunday April 14. eventbrite.com/e/matt-parker-an-evening-of-unnecessary-detail-tickets-847453715877?aff=oddtdtcreator

Pre-order my new book! mathsgear.co.uk/collections/books/products/love-triangle-by-matt-parker-signed

The excellent graphics of spinning dodecahedrons were made by Ben Sparks. You can see the GeoGebra file here: geogebra.org/m/yhkepkbc

Some more details about space diagonals on Math Stack Exchange.
math.stackexchange.com/questions/4181398/space-diagonals-of-a-dodecahedron

Huge thanks to my Patreon supporters. They keep my polyhedra intersecting. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Laser cutting by Lisa Mather
Extra graphics by Ben Sparks
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson
Training on using a bandsaw by Adam Savage

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

The beautiful maths which makes 5G faster than 4G, faster than 3G, faster than...

Stand-up Maths 2024-02-29 | Pre-order Love Triangle on Maths Gear now and get a signed copy! Also, a special book cover if you're fast enough. mathsgear.co.uk/products/love-triangle-by-matt-parker-signed

UK edition out 20 June, pre-order options: bit.ly/UKLoveTriangle
USA edition out 20 August, pre-order options: bit.ly/3wCTesR

Here are the fantastic GeoGebra files Ben Sparks made for the video.
Modulated 1 bit: geogebra.org/m/bndn54th
Modulated 2 bit: geogebra.org/m/enkymjtg
Constellations: geogebra.org/m/fff3aqvn
Sum of waves: geogebra.org/m/trjxxf9p

Huge thanks to my Patreon supports. They enable me to be outstanding in a field. patreon.com/standupmaths

CORRECTIONS
- 07:15, don't ask why that circle is there. It's not a clue. I just forgot to turn off a layer in photoshop.
- At 10:06 I didn't show the Gray Code paths which loop around the diagram. But you get the idea.
- Yes, I spelled "Pello!" in the hidden binary message instead of "Hello!". It was an idea I had at the last second and I didn't double check where I was clicking!
- Let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Geogebra files by Ben Sparks
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

The 1,200 Year Maths Mistake

Stand-up Maths 2024-02-22 | See you all in Wemding, Germany in 2033 for the next installation of this inevitable maths mistake.

Thanks to everyone involved with Zeitpyramide who were hugely welcoming and accomodating. Official Zeitpyramyde website: http://www.zeitpyramide.de/

Check out Ayliean MacDonald's excellent work on TikTok and indeed YouTube:
tiktok.com/@ayliean/video/7276938427071876385
youtube.com/@Ayliean

We also had an very helpful German-to-English translator in Benjamin Unger who kindly did not translate all of the speeches for me.

Read more about off-by-one errors in my book Humble Pi: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Huge thanks to my Patreon supporters. They lift me up like a 6.5 tonne block. patreon.com/standupmaths

CORRECTIONS
- 01:24 I say "square numbers" when I mean "even square numbers". First corrected by TheSamuelWells
- A few people have noted that the "clarinet" is actually a "soprano saxophone". I am very sorry to all the music nerds.
- Let me know if you spot anything else!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker and Ayliean MacDonald
Blocky animations by William Marler
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson
All soprano saxophone music was recorded live on location.

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

The mystery of 0.8660254037844386467637231707529361834714026269051903140279034897...

Stand-up Maths 2024-02-13 | Support "Doing Things the Hard Way Matt" on patreon: patreon.com/standupmaths

Full video of Doing Things the Hard Way Matt doing things the hard way is on Patreon: patreon.com/posts/watch-full-doing-98412935

OEIS sequence A010527 "Decimal expansion of sqrt(3)/2"
oeis.org/A010527

Do support the OEIS! oeisf.org/donate

And here are a bunch of the digits:
0.8660254037844386467637231707529361834714026269051903140279034897

Wikipedia page on "ISO metric screw thread"
en.wikipedia.org/wiki/ISO_metric_screw_thread

Huge thanks to my Patreon supporters. They keep my triangle equlateral. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Oh look at this: https://forms.gle/hWes6BgPji3L8RfH6

Why do all shapes lie in the Polyhedron Plane?

Stand-up Maths 2024-01-31 | Check out AMP or suggest it to someone who could benefit. And here is the puzzle: bit.ly/sum-amp

Thanks to Jane Street for sponsoring this video! janestreet.com/join-jane-street

I'll be doing An Evening of Unnecessary Detail at the Bristol Beacon, UK on Tuesday 12 March 2024. Come and celebrate Almost Pi Day with me! And celebrate Ages Until Tau Day with Steve Mould.
festivalofthespokennerd.com/tickets
bristolbeacon.org/whats-on/an-evening-of-unnecessary-detail

Here is Grant's old, old 3blue1brown video. It's so good. youtube.com/watch?v=-9OUyo8NFZg

Check out Ben's GeoGebra file we used to simulate the PolyPlane: geogebra.org/m/h9gpaawf

Polyplane will be at the UCLA campus in Los Angeles, February 01 to 28, 2024. You can also still send in a polyhedron from anywhere in the world or enquire about hosting it yourself. polyplane.org

Polyplane is made possible thanks to fiscal sponsorship from the Seattle Universal Math Museum. seattlemathmuseum.org

Thanks to Henry Segerman for helping out as well. You should watch their awesome videos: youtube.com/@henryseg

Huge thanks to my PatreonPlane supporters. They covered the "press pass" I had to buy to access the Joint Math Meeting. I could as part of the Press, right? patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Matt Parker
Editing by Alex Genn-Bash
Written and performed by Matt Parker
GeoGebra graphics and addition material by Ben Sparks
Edge complaining by Grant Sanderson
Yes they bent the rules by Henry Segerman
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Oh look at this: https://forms.gle/hWes6BgPji3L8RfH6

Rarefaction curves and advanced mothematics .

Stand-up Maths 2024-01-27 | Watch this space for any updates on if the rainforest moths we found were new to science!

Thanks to Rainforest Expeditions who organised our trip. rainforestexpeditions.com

Full disclosure: we paid for our flights to Peru but Rainforest Expeditions provided our visit into the rainforest for free. We visited the Tambopata Research Center and the Refugio Amazonas lodges. If you'd like to visit via the method of exchanging money, check out their site or socials:
youtube.com/@RainforestExpeditions
instagram.com/rainforestexpeditions

Read more about the research being done in the rainforest by Wired Amazon. They also take volunteers if you like doing science while being rained on. wiredamazon.com

Check out Mark's channel: youtube.com/@aFieldBiologist

Mark is also a Lecturer in Wildlife, Ecology & Conservation Science at the University of Suffolk. See his research here: scholar.google.co.uk/citations?user=bX-GbkUAAAAJ

Second channel video over here: youtu.be/EZpJ7h8k1fo

Huge thanks to my Patreon supporters. They bought me a Peru tourist t-shirt and a pair of socks with sloths on them. But the time we got out of the rainforest I had no clean clothes and had to buy a new outfit at the airport to be presentable enough to get on the plane home. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced live in the rainforest by Nicole Jacobus
Animations by William Marler
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Spoiler: In the next rainforest video I get stung by a bullet ant. But don't tell anyone, it's going to be a surprise. I know I was surprised. Downright shocked.

Why are the ice shelves collapsing?

Stand-up Maths 2024-01-05 | Yes, I'm doing a show in LA on Sunday January 7. It's a bit last-minute. Come and say hi! flapperscomedy.com/shows/an-evening-of-unnecessary-detail/72865

Huge thanks to Sammie for sharing her equations. Check out her work at Northumbria University: northumbria.ac.uk/about-us/our-staff/b/sammie-buzzard

"A Mathematical Model of Melt Lake Development on an Ice Shelf" agupubs.onlinelibrary.wiley.com/doi/full/10.1002/2017MS001155

Sammie's very good MATLAB code! researchdata.reading.ac.uk/121

Ice shelf satellite images thanks to NASA/Goddard Space Flight Center Scientific Visualization Studio. svs.gsfc.nasa.gov/2421

Thanks to the Reading Biscuit Factory for letting us film in their lovely cafe. readingbiscuitfactory.co.uk

I went to Antarctica with Hurtigruten. hurtigruten.com/en-us/expeditions/destinations/antarctica-cruises

Huge thanks to my Patreon supporters. They bought me that coffee I was drinking. Sammie only wanted a glass of ice water. I swear I offered her other beverages but no, she's too on-brand for that. patreon.com/standupmaths

CORRECTIONS
- None yet, as far as I’m aware everything in the thumbnail is spelled correctly. Let me know if you spot anything!

Filming by Alex Genn-Bash
Editing by Christopher Brooks
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

I designed a silly but semi-functional computer.

Stand-up Maths 2023-11-27 | Get your calculating christmas card! Support me on patreon: patreon.com/standupmaths

All Patreon supporters will be emailed a personalised card (deadline end of December, but sign up sooner for an earlier email) and "statistically significant" or higher get posted a physical signed card (deadline end of December but sign up by end of November to get it before christmas).

Check out Mark Dominus's great blog. Link to follow-on post at end of this one.
blog.plover.com/math/irish-logarithm.html

Here is the sign-up to volunteer for Pi By Hand 2024. https://forms.gle/CVocrwomCe1Q4iuX6

Paper on other method to get Ludgates's values: https://treasures.scss.tcd.ie/miscellany/TCD-SCSS-X.20121208.002/Ludgate-LogarithmixIndexes-20200610-1459.pdf

All of the numbers I found are below. So many numbers. Presented three different ways, which is really unhelpful.

Huge thanks to my Patreon supporters. They put the teeth on my cogs. patreon.com/standupmaths

CORRECTIONS
- Yes, the invention of logs in 1614 is 410 years ago, not 400, as I said around 06:10. On the fly my brain confused it with the 1624 publishing of Arithmetica Logarithmica, the first great log table book. First noted by AlexSh789.
- In the completed table around 11:54 I accidentally put in some products where are not the result of two one-digit numbers (60, 80 and 90), and thus are not needed. First pointed out by Frederico via email.
- Let me know if you spot anything else!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced by Nicole Jacobus
Cogputer build by Lisa Mather and Katie Steckles
Tree build by Nina, Carrie and assisted by Laura.
Extra material by Adam Atkinson
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

0-9 COGPUTER

0 cog: 1 teeth
1 cog: 42 teeth
2 cog: 41 teeth
3 cog: 27 teeth
4 cog: 40 teeth
5 cog: 8 teeth
6 cog: 26 teeth
7 cog: 18 teeth
8 cog: 39 teeth
9 cog: 12 teeth

LABELS ON MIDDLE COG:

CE, --, 00, --, --, --, --, --, --, 00, --, --, --, 00, --, --, 25, --, --, 00, 45, --, --, --, 81, --, 35, 00, 00, --, 63, --, --, --, 30, 15, 49, --, 54, 27, 00, 00, 00, 00, 42, 21, --, 40, 20, 10, 05, 72, 36, 18, 09, --, --, 56, 28, 14, 07, --, --, --, --, 48, 24, 12, 06, 03, --, --, --, --, --, --, --, --, 64, 32, 16, 08, 04, 02, 01

1-9 CHRISTMAS TREE

Present 1 is 7 units tall
Present 2 is 5 units tall
Present 3 is 18 units tall
Present 4 is 3 units tall
Present 5 is 21 units tall
Present 6 is 16 units tall
Present 7 is 28 units tall
Present 8 is 1 units tall
Present 9 is 29 units tall

Bauble 1 is 14 units high
Bauble 2 is 12 units high
Bauble 3 is 25 units high
Bauble 4 is 10 units high
Bauble 5 is 28 units high
Bauble 6 is 23 units high
Bauble 7 is 35 units high
Bauble 8 is 8 units high
Bauble 9 is 36 units high
Bauble 10 is 26 units high
Bauble 12 is 21 units high
Bauble 14 is 33 units high
Bauble 15 is 39 units high
Bauble 16 is 6 units high
Bauble 18 is 34 units high
Bauble 20 is 24 units high
Bauble 21 is 46 units high
Bauble 24 is 19 units high
Bauble 25 is 42 units high
Bauble 27 is 47 units high
Bauble 28 is 31 units high
Bauble 30 is 37 units high
Bauble 32 is 4 units high
Bauble 35 is 49 units high
Bauble 36 is 32 units high
Bauble 40 is 22 units high
Bauble 42 is 44 units high
Bauble 45 is 50 units high
Bauble 48 is 17 units high
Bauble 49 is 56 units high
Bauble 54 is 45 units high
Bauble 56 is 29 units high
Bauble 63 is 57 units high
Bauble 64 is 2 units high
Bauble 72 is 30 units high
Bauble 81 is 58 units high

2-9 CHRISTMAS TREE CARD

2: 3
3: 12
4: 2
5: 17
6: 11
7: 24
8: 1
9: 20

height: bauble number
2: 64
3: 32
4: 16
5: 8
6: 4
12: 48
13: 24
14: 12
15: 6
18: 40
19: 20
20: 10
21: 72
22: 36
23: 18
24: 9
25: 56
26: 28
27: 14
28: 30
29: 15
31: 54
32: 27
34: 25
35: 42
36: 21
37: 45
40: 81
41: 35
44: 63
48: 49

THE END

PS https://forms.gle/UqZQRwYe26SLJjMn8

Why does Vegas have its own value of pi?

Stand-up Maths 2023-10-24 | UPDATE: They fixed the website! And we got a photo of the pi wall! youtu.be/iW1MZWBZbQU

Here is the value of "Vegas Pi":
3.14159265358979323846
1715364367892590360011
6892589235420199561121
968230301952035301852

Read all about the Sphere and science:
thespherevegas.com/science

Thanks to Linus Boman for the help! Check out their excellent videos: youtube.com/@LinusBoman

Here is Linus's post on Mastodon with type nerds chiming in: https://typo.social/@timesnewboman/111279740233741511

Thanks to Kelly Bruce for sending in the mistake!

I've sent Sphere Entertainment Co. a copy of this fixed image. dropbox.com/scl/fi/chpw4bu2bis4lhc4q3999/pi-eq-1.png?rlkey=kws3l79kffgl8zovigsqd8ace&dl=0

If you'd like to see it, this is my pi layout which tipped me off to the possible alignment. dropbox.com/scl/fi/3ku5gmisysw54dte8oj0o/pi_text_layout.jpg?rlkey=sp4xhmgspcultpazfryskhu0s&dl=0

Huge thanks to my Patreon supporters. They paid for the melon. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced by Nicole Jacobus
Melon disposal by Skylab the Dog
Music by Howard Carter
Design by Simon Wright and Adam Robinson

Oh, and if you are the sort of person who would like to pre-order a limited signed first edition copy of my next book, I imagine here is the kind of place where you could register for that: https://forms.gle/Xf2bqiqZzoJkF46A6

The Neat Alignment of the Worlds Biggest Antiprism

Stand-up Maths 2023-10-18 | Check out Jane Street paid internships janestreet.com/internships (or pass on to someone you think would benefit from it).

Huge thanks to Laura Taalman for joining me for a day of walking and math. You can see all things Taalman on her website including excellent 3D print files: mathgrrl.com

Next "An evening of Unnecessary Detail" show is 20 November 2023 in London. More shows in the future in the UK and USA, ticket links always here: fotsn.com/tickets

Thanks to "biludavis" for the 3D model of the WTC: thingiverse.com/thing:263478 All other 3D models and prints were designed by Laura.

Huge thanks to my Patreon supporters. They put the twist in my antiprism. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Alex Genn-Bash
Math by Laura Taalman
Produced by Nicole Jacobus
Stills photography by Truman Hanks
Editing by Christopher Brooks
Sound mix by Steve Pretty
Music by Howard Carter
Design by Simon Wright and Adam Robinson
Written and performed by Matt Parker

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

A needlessly complicated but awesome bridge.

Stand-up Maths 2023-08-31 | The Einstein Hat Competition! momath.org/hatcontest

Thanks to Jane Street for supporting this video.
janestreet.com/join-jane-street

Stan Wagon has written an article about all of the maths involved in the bridge: community.wolfram.com/groups/-/m/t/2917199

Designed by Thomas Randall-Page. thomasrandallpage.com

Engineering by Alfred Jacquemot (then of Price & Myers). pricemyers.com/about-us/people/alfred-jacquemot

You can ride the MoMath square-wheel bike in NYC or Stan Wagons's at Macalester College in Minneapolis.
momath.org/16-square-wheeled-trike-3
https://www.macalester.edu/mscs/multimedia/squarewheeledbike/squarewheelbike/

Visit Cody Dock in East London. codydock.org.uk

Huge thanks to my Patreon supporters. They keep my bridges rolling. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Alex Genn-Bash and Christopher Brooks
Editing by Christopher Brooks
Written and performed by Matt Parker
Produced and drone flying by Nicole Jacobus
Scene stealing by that cat
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Mirror-image Mirror Balls: introducing the Kite-Rhombus Hectapentacontahedron

Stand-up Maths 2023-08-21 | The Big Feastival is this weekend! thebigfeastival.com (Or if you are watching this in the future: some weekend in your subsequent August.) I'm there most years, come and say hi! In 2023 we're making a giant sun dial.

Blur are on tour again and have a new album out! I've seen the show and listened to the album so can recommend both personally. blur.co.uk
music.youtube.com/playlist?list=OLAK5uy_kx0OirV41v6j1vuMqU_1dpeK-qZv1RXOg

Huge thanks to Robert for finding all eight "Eight Kite-Rhombus Solids". robertlovespi.net/2018/04/29/eight-kite-rhombus-solids-plus-five-all-kite-polyhedra-the-convex-hulls-of-the-thirteen-archimedean-catalan-compounds

Thanks to Lisa Mather who designed and laser-cut all of the kites and rhombi so we could cable tie them together. twitter.com/lisa_mather

Internal frame for the balls was designed and built by Dave Ansell. sciansell.co.uk/node/167

3D design and all images of the shape was done by Sam Hartburn. samhartburn.co.uk/sh

The build crew included but was not limited to: Alex Genn-Bash, Alex James, Ben Sparks, Katie Steckles, Lisa Mather, Lucie Green, Matt Parker, Matthew Scroggs, Paul Taylor and random festival attendees.

Huge thanks to my Patreon supporters. They keep my balls in the air. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Graphics by Sam Hartburn
Cheese by Alex James
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

An unexciting video about distance derivatives

Stand-up Maths 2023-08-01 | An exploration of distance, speed, acceleration and other members of the distance-derivatives family. With no need for any flashy gimmicks.

Watch the Rapid Motion Through Space Documentary. youtu.be/NYDdHSXRQro

Huge thanks to Cas Visser, Dom Wilson, Jan Wolf and everyone else who had a look at my giant csv of data and tried to help wrangle it.

This is the episode of my podcast A Problem Squared where I asked for help with the data: aproblemsquared.libsyn.com/054-sparkling-wines-and-marking-lines

Find out more about the Two Wheels for Life charity. twowheelsforlife.org

Need more terrifying in your life? Have a ride on the two-seater MotoGP bike yourself: twowheelsforlife.org/experiences-and-memorabilia/mission-winnow-ducati-two-seat-ride

This is the app I used to log the data: http://sensorlog.berndthomas.net

Cheers to my Patreon supporters. Your support really drove me around the bend. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Trunkman Productions
Additional filming by Alice Degrassi and Ben Westaway
Written and performed by Matt Parker
Background extra by Hannah Fry
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

Special thanks to Trunkman Productions Ltd, The Cosmic Shambles Network, Two Wheels for Life and DornaSports for facilitating filming at the British Round of the MotoGP™ Championship. MotoGP™ is a registered trademark of DORNA SPORTS, S.L and all footage and images from the MotoGP™ championship are used with their permission and remain their © Copyright. Documentary footage is Copyright © 2023 Trunkman Productions Ltd and is used with permission.

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

How many ways can you join regular pentagons?

Stand-up Maths 2023-07-07 | Thanks to Jane Street for supporting this video.
janestreet.com/join-jane-street

Curved-Crease Sculptures by Erik Demaine and Martin Demaine
erikdemaine.org/curved

The original paper: "A Complete List of All Convex Polyhedra Made by Gluing Regular Pentagons" arxiv.org/abs/2007.01753

Get your hexagon equivalent here: arxiv.org/abs/2002.02052

Cookie. Clicker. Like that video is going to happen.
arxiv.org/abs/1808.07540

Huge thanks to my Patreon supporters. They keep all my polyhedra convex. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Unexpected science from a 0.000001 megapixel home-made telescope

Stand-up Maths 2023-06-06 | Bonus footage of me talking about the Parkerscope over here on Patreon: patreon.com/posts/bonus-data-chat-84165442

Thanks to Greg Foot for helping out with all of the filming. Check out their channel: youtube.com/@GregFoot

Pretty sure Greg was the only YouTuber who was with me at the Eclipse.

Lucie's telescope was the "Coronal Imaging Polarizer (CIP)" from Aberystwyth University. Here is a poster outlining its results from a 2020 eclipse: ras.ac.uk/sites/default/files/NAM/P184%20-%20Edwards.pdf

Print your own Parkerscope stickers: dropbox.com/s/ljbzzu46gab1s4r/parkerscope%20sticker%20pack.zip?dl=0

This is the excel file with all my data from the video: dropbox.com/s/5nxlx9otc7gom7i/parkerscope_data.xlsx?dl=0

Parkerscope code is over here: github.com/standupmaths/parkerscope

I was using the ALX-1309 USB Logging Light Meter
atp-instrumentation.co.uk/usb-logging-light-meter.html

Huge thanks to my Patreon supporters. They paid for all the snacks Grant ate during the very long drive. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Much filming by Greg Foot
Additional filming by Alex Genn-Bash
Editing by Christopher Brooks
Parkerscope design by Nicole Jacobus and Alex Genn-BAsh
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

We analysed 4,678,387 NBA shots

Stand-up Maths 2023-05-30 | Check out Grant's Summer of Math Exposition (supported by Jane Street!)
some.3b1b.co
More details here: 3blue1brown.substack.com/p/some3-begins

Tim Chartier has a great book called "Get in the Game - An Interactive Introduction to Sports Analytics" if you'd like to learn more about their work. https://press.uchicago.edu/ucp/books/book/chicago/G/bo178291370.html
Here is their Davidson College page: https://www.davidson.edu/people/tim-chartier

The song "Get Ready for Maths" is written and recorded by Jonny Berlin (based on the original "Get Ready for This" by 2 Unlimited). Listen to it over here: jonnyberliner-sciencesongs.bandcamp.com/track/get-ready-for-maths and check out Jonny's site: http://www.jonnyberliner.com

And thanks to Nolan Rau, Liz Labows and Bec Hill for rounding out our team of six.

Check out MoMath's Hoop Curves. momath.org/home/hoop-curves

Huge thanks to my Patreon supporters. They keep me in the game. patreon.com/standupmaths

CORRECTIONS
- At 04:44 I say "Noel" in the voice over instead of Nolan. Sorry Nolan!
- Yes, in the plots of our shots at 05:13, 05:59 and 14:22 I left the axis labelled as "inches" and it should be "feet".
- At 11:18 I say "eight points" but I mean "point eight points".
- Let me know if you spot anything else!

Diagram of basketball court adapted from this one:
commons.wikimedia.org/wiki/File:Basketball_-_NBA_-_field_diagram_-en.svg

Photo of restricted zone during a game from Roy on Flickr.
flickr.com/photos/thehutch/1536622933

Filming by Alex Genn-Bash
Editing by Nico Turner
Some graphics by Grant Sanderson
Other graphics by Matt's Terrible Python Code™
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter and Jonny Berliner
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Behold all-new equations for triangles!

Stand-up Maths 2023-04-26 | Thanks to Jane Street for supporting this video. Check out their open roles, programs and events: janestreet.com/join-jane-street

Here is the original "Is there an equation for a triangle?" video. youtube.com/watch?v=4K-Jx914NcQ (I'm taking suggestions for what Part III should be named. Comment below.)

And thanks to everyone who contributed to the triangleness. Here are all the triangles and non-triangles mentioned in this video:

Mohammed Jafari's close-but-not-triangle: desmos.com/calculator/hr1ttjl1yj
Generic Viewer's close-but-not-triangle: desmos.com/calculator/kzpt2jaqf2

Harrison's non-generalised triangle: desmos.com/calculator/cvpc44qbj2
Idiotinium's non-generalised triangle: desmos.com/calculator/svfvcsygfn
Jaden's non-generalised triangle: desmos.com/calculator/uasl4f7jqt
Tristan's non-generalised triangle: desmos.com/calculator/pdu7mlk3ft
And Tristan's Zombie Walker: desmos.com/calculator/zkcv0dqidb

Reddit thread generalising triangle equation: reddit.com/r/math/comments/rc55yz/response_to_matt_parkers_triangle_video

Anson Mansfield's generalised triangle: desmos.com/calculator/pbzv9nsevh
Graham Goble's generalised triangle: desmos.com/calculator/eax4q1syvj
Steve's generalised triangle: desmos.com/calculator/qy4v9bcluw

Inigo's triangle in ShaderToy: shadertoy.com/view/XsXSz4

Huge thanks to my Patreon supports. They encourage me to triangle my best. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming by Alex Genn-Bash
Editing by Michelle Martin
Diagrams by Sam Hartburn
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

I Discovered a Maths Loophole in UK Tax

Stand-up Maths 2023-04-20 | Subscribe to Stand-up Maths for more tax tips this useful or less.

Yet to be sponsored by Hubbard's Foodstore Spaghetti Rings in Tomato Sauce. Click here for 0% off your order! sainsburys.co.uk/gol-ui/product/sainsburys-baked-beans-in-tomato-sauce--basics-420g

National Insurance rates and categories (by Hey Mate, Right Cash) gov.uk/national-insurance-rates-letters

Huge thanks to my Patreon supporters. You're all tariffic. patreon.com/standupmaths

CORRECTIONS
- At 05:56 I say “standard leap year” when I mean “standard year”. Sorry! First noticed and reported by Blueboy5678 and Hari Krishnan.
- User “Go Away” corrected a typo in the above correction.
- Let me know if you spot anything else!

Filming and editing by Alex Genn-Bash
Graphics by William Marler
Written, performed and embezzled by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Are There Any 3-Landlocked Countries?

Stand-up Maths 2023-04-03 | Best VPN there is: privateinternetaccess.com/standupmaths

UK boundary data from the OS.
osdatahub.os.uk/downloads/open/BoundaryLine

World Country data from opendatasoft.
public.opendatasoft.com/explore/dataset/world-administrative-boundaries/table

USA states from looking at them very closely.

"English counties explained" by Map Men
youtube.com/watch?v=hCc0OsyMbQk

Oh look, a video about the City of London
youtube.com/watch?v=LrObZ_HZZUc

Target 10.b
"in particular least developed countries, African countries, small island developing States and landlocked developing countries, in accordance with their national plans and programs".
en.wikipedia.org/wiki/Sustainable_Development_Goal_10

Graphics artfully animated by Christian Lawson-Perfect. somethingorotherwhatever.com

The other person in the field was Matt Watson, my tour manager. He also makes music: mattwatsonmusic.bandcamp.com

Massive thanks to my Patreon supports. They are a huge amount of Alp. patreon.com/standupmaths

CORRECTIONS
- Now I regret mentioning the Danube river! Apart from that one aside about international diplomacy and a port: for the rest of the networks I did not include rivers, even if they are navigable to an ocean. I appreciate these would change things like London and apparently the USA has some super great lakes.
- Let me know if you spot anything else!

Happy birthday to Eliyahu!

Filming and editing by Alex Genn-Bash
Graphics by Christian Lawson-Perfect
Muddy field navigating with Matthew Watson
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Was Michael Jacksons hair catching fire in a Pepsi ad the exact mid-point of his life?

Stand-up Maths 2023-03-17 | Do check out Bobby's video. It's a work of art. But be warned: it contains adult themes and some strong language. So if you watch my videos with young people, maybe watch Bobby's when they're not around. youtube.com/watch?v=QHi479xN_po

And a huge thanks to my good friend BEC HILL who introduced me to Bobby. PS Hello to everyone reading this from A Problem Squared.

UPDATE: The envelope of pin-board paraphernalia has been claimed! twitter.com/standupmaths/status/1638855936923009026?s=46&t=EVDbN01K_p7T27Gd23R0bw
First person to find me IN A PUBLIC SPACE can have the pin-up board (without the pins or board). I've put all the bits in an envelop and will carry it with me whenever I'm in public. Don't try to hunt me down at home. It'll be weird.

I think this is the original claim that it was the mid-point of his life. From April 2019.
mjjcommunity.com/threads/unusual-michael-jackson-coincidence-how.142918

Here is the quote about the time of day his hair caught fire: "at the Shrine Auditorium Friday night"
upi.com/Archives/1984/01/28/Michael-Jackson-hospitalized-after-fireworks-mishap-on-set-of-Pepsi-commercial/9136444114000

Here is the regulation governing daylight saving time in Indiana when Michael Jackson was born:
1957: "The General Assembly votes to make Central time the official time of the state but permit any community to switch to daylight-saving time during the summer."
eu.indystar.com/story/news/politics/2018/11/27/indianapolis-indiana-time-zone-history-central-eastern-daylight-savings-time/2126300002

This website claims Gar did switch to daylight saving in 1958, specifically: "27 Apr 1958 - Time Zone Change (CST → EST)" but I'm not sure where that information has come from.
timeanddate.com/time/change/usa/indianapolis?year=1958

Huge thanks to my Patreon supports who keep in strings and pins. Join and you'll have a head-start the next I foolishly encourage the internet to hunt me down. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Using an Out-of-Control Car to Calculate π.

Stand-up Maths 2023-03-10 | Happy Pi Day: 14 March 2023. (Yes, the video goes out a few days early. So teachers have time to plan their Pi Day activities.)

Huge thanks to Eric and the whole team for letting us in to skid some cars and calculate pi.

It was an active and working site and they did a great job making time, staff and cars available for us.

If you want to learn more about traffic reconstruction calculations, check out this (slightly odd) 1983 book "Handbook For The Accident Reconstructionist". ojp.gov/pdffiles1/Photocopy/98667NCJRS.pdf

If you want to sign-up and hear about Pi Day 2024 plans, here is the form: bit.ly/piday24help

Huge thanks to my Patreon people who support all my silly Pi Day videos with their irrational funding. Join in and we'll make Pi Day 2024 bigger and sillier. patreon.com/standupmaths

And sorry I could only put the names of Statistically Significant and higher Patreon tiers on the scrolling credits. A bunch of that was done by hand and that was the limit of what could be lined up.

CORRECTIONS
- If we had used 26/38 exactly were would have π = 3.136421 which is basically 3.14 (First spotted by CK.)
- Let me know if you spot anything else!

Filming and editing by Alex Genn-Bash
Pi Reconstruction by Eric
Stunt Driving by A Colleague Of Eric's
Location provided by Like We're Going To Tell You
Extra help by Why Are You Asking So Many Questions
Written and performed by Matt Parker
Credits Animation by William Marler
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker

The 56-Year Argument About a Hopping Hoop

Stand-up Maths 2023-02-27 | Thank you to BetterHelp for sponsoring this video! To get 10% off your first month of therapy, go to betterhelp.com/standupmaths to sign up today.

If you are need of urgent mental health support please check for crisis help lines available in your country.
USA: mentalhealth.gov/get-help/immediate-help
UK: nhs.uk/mental-health/advice-for-life-situations-and-events/where-to-get-urgent-help-for-mental-health
Plus if you are in Europe you can search Mental Health Europe: mhe-sme.org

Check out Ben's Hopping Hoop Geogebra file:
geogebra.org/m/ddsfjbvy

Thanks to Lisa Mather for making the hopping hoops for me. And an extra shout-out to Joel Tatarek-Gintowt for modelling and 3D printing the ball bearing casement.

Here are all the papers mentioned:

A Mathematicians Miscellany (1953) by John Littlewood
archive.org/details/mathematiciansmi033496mbp

The Hopping Hoop (1997) by Tadashi F. Tokieda
doi.org/10.1080/00029890.1997.11990614

Hopping Hoops Don't Hop (1999) by James P. Butler
doi.org/10.1080/00029890.1999.12005084

The Hopping Hoop Revisited (1999) by Timothy Pritchett
doi.org/10.1080/00029890.1999.12005094

The rolling motion of an eccentrically loaded wheel (2000) by W.F.D. Theron
doi.org/10.1119/1.1302324

The amazing variety of motions of a loaded hoop (2007) by W.F.D. Theron and M.F. Maritz
sciencedirect.com/science/article/pii/S0895717708000289

The dynamics of an eccentrically loaded hoop (2010) by Andrew Taylor and Mary Fehrs
aapt.scitation.org/doi/10.1119/1.3300613

CORRECTIONS
- Yes, I know, 08:33 worst cycloid ever. No need to tell me.
- At 12:23 I say "no friction" when I am talking about the hoop not skidding, and yes, that should be "infinite friction".
- Let me know if you spot anything else!

Huge thanks to my Patreon supports. They keep me rolling along. patreon.com/standupmaths

Filming and editing by Alex Genn-Bash
Props by Lisa Mather and Joel Tatarek-Gintowt
Written and performed by Matt Parker
GeoGebra and extra material/research by Ben Sparks
Hoop catching by Nicole Jacobus
Dog wrangling by Lucie Green
Hoop chasing by Skylab the Dog
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Beware the Runge Spikes!

Stand-up Maths 2023-02-06 | Check out Overleaf: the easy to use, online, collaborative LaTeX editor! bit.ly/overleaf_sum

RungeBot on both twitter (for now!) and mastodon.
twitter.com/rungebot
https://mathstodon.xyz/@RungeBot

Yes, I'm on mastodon: https://mathstodon.xyz/@standupmaths

Huge thanks to Matthew Scroggs for letting me turn his MathsJam talk into a video and helping me out with all of the animations. mscroggs.co.uk

Here is the MENACE Scroggs video I mentioned: youtube.com/watch?v=R9c-_neaxeU

Thanks also to Dave Hartburn for doing the flat earth digging. His MathsJam slides are here: mathsjam.com/assets/talks/2022/B%20Dave%20Hartburn%20-%20Maths%20or%20conspiracy.pdf

Cheers to Ben Sparks for making that geogebra file. bensparks.co.uk

Huge thanks to my Patreon supports. They keep me on the level. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Animations and geogebra by Matthew Scroggs
Some geogebra by Ben Sparks
Diagrams by Sam Hartburn
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson
Legitimate scientist by Professor Lucie Green

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

The Genius Geometry of the James Webb Space Telescope

Stand-up Maths 2023-01-18 | Details about the Jane Street Academy of Math and Programming: janestreet.com/join-jane-street/programs-and-events/amp Apply by 15 March for full-scholarship attendance. See you there!

NASA made a great "Webb’s Diffraction Spikes" infographic.
webbtelescope.org/contents/media/images/01G529MX46J7AFK61GAMSHKSSN

The differences between Webb and Hubble
jwst.nasa.gov/content/about/comparisonWebbVsHubble.html

Webb deepfield
nasa.gov/image-feature/goddard/2022/nasa-s-webb-delivers-deepest-infrared-image-of-universe-yet

Hubble deepfield
en.wikipedia.org/wiki/Hubble_Deep_Field#/media/File:HubbleDeepField.800px.jpg

Here is the WebbPSF python package.
webbpsf.readthedocs.io/en/latest

LIVE: Biden previews first images from Webb Space Telescope (reveal is at 05:37)
youtube.com/watch?v=WsG_HGt6sl8

Bill Nelson born September 29, 1942. Joe Biden born November 20, 1942. They were both 79 at the time.

The images of space were all produced by NASA and the Space Telescope Science Institute who have kindly made them freely available for the rest of us to use.

Huge thanks to my Patreon supports. That shiny cardboard isn't cheap. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Once a Millennium Alignment of All Three Norths

Stand-up Maths 2022-12-19 | Own the map! ebay.co.uk/itm/364113096218

Get your North by North-North tour merch here! standupmaths.teemill.com/collection/north-north-north

Thanks to Bec Hill for voicing the Norths Tour. I have a podcast with Bec and we talked about me making this video in the latest episode: aproblemsquared.libsyn.com/49-grand-theft-auto-five-and-girlfriend-digit-size

If you're anywhere near Worth Matravers in Dorset you should absolutely visit The Square and Compass. squareandcompasspub.co.uk

Here is the OS Maps post about the triple alignment. ordnancesurvey.co.uk/newsroom/news/three-norths-align-great-britain

However, if you watch their video be warned about when the diagonal line crosses the 2° line: their line slopes to the left and moves to the right, whereas my line slopes to the right and moves to the left. This is because the OS is drawing the zero-point for magnetic-vs-grid but I'm doing magnetic-vs-true. Which is a mirror image.

You can see all of NOAA's Historical Magnetic Declination data here: ncei.noaa.gov/maps/historical_declination

Huge thanks to my Patreon supporters who funded this ridiculous trip to the south coast of the UK to film a silly video. They also bought me two pints of beer and one packet of crisps. Which were all totally key props/research and not a mis-use of Patreon support funds. Support me and maybe next time I'll get a second packet of crisps. patreon.com/standupmaths

Bonus thanks to Christopher James who put a link to the OS article about this in a maths communication whatsapp group with the message "I hope someone is planning to visit and make an interesting video about this." And thanks to Colin Beveridge who answered some key questions about it in that group.

CORRECTIONS
- None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Making efficient Platonic and Archimedean shapes in a kaleidoscope

Stand-up Maths 2022-12-06 | Sign up on Patreon for the SUM xmas card! patreon.com/standupmaths If you want the physical card you need to be greater than or equal to "Statistically Significant".

Physical card deadline: end of 06 December 2022
Digital card deadline: end of 15 December 2022
(In both cases I'll try to accommodate sign-ups after that but no promises).

This is why the christmas tree on the card is so low resolution: youtube.com/watch?v=jOTTZtVPrgo

Here is the "Deltoidal kaleidoscopes" paper by Josep Rey Nadal and Manuel Udina Abelló.
archive.bridgesmathart.org/2022/bridges2022-351.pdf

Museu de Matemàtiques de Catalunya aka "Museum of Mathematics of Catalonia" https://mmaca.cat/en/

This is the art show listing from the 2022 Bridges conference in Helsinki. http://gallery.bridgesmathart.org/exhibitions/2020-bridges-conference/josep-rey

For both kaleidoscopes make two mirror images of each shape.
Deltoidal Hexacontahedron Kaleidoscope Faces: dropbox.com/s/9tltpyo4v6kjfr6/DeltoidalHexacontahedronKaleidoscopeFaces.pdf?dl=0
Deltoidal Icositetrahedron Kaleidoscope Faces: dropbox.com/s/jb356rspfn5888c/DeltoidalIcositetrahedronKaleidoscopeFaces.pdf?dl=0

Here is the second channel video from 2017: "How to flat-pack a cube" youtube.com/watch?v=Kr-yV_T-_9A

Huge thanks to my Patreon supporters who funded so many sheets of mirror acrylic. I actually have a bunch left over. Support me and tell me what I should do with the rest of the mirrors. patreon.com/standupmaths

CORRECTIONS
- None yet, let me know if you spot anything! My bad taping skills do not count as a mistake.

Filming and editing by Alex Genn-Bash
Shape calculations by Sam Hartburn
Written and performed by Matt Parker
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Can the Same Net Fold into Two Shapes?

Stand-up Maths 2022-12-03 | If you cut out the net from the card and solve a fold: send me a photo! Maybe hang it on your tree as a decoration.

To receive a physical card you officially need to be a "statistically significant" supporter (or higher) on Patreon by the end of 06 December 2022. And all supporters get emailed a digital copy! patreon.com/standupmaths

This is the tweet from Jun Mitani in 2017: twitter.com/jmitani/status/870414535034757120
And the recent retweet by Vincent Pantaloni I saw: http://twitter.com/panlepan/status/1582175737213509633

Huge thanks to Ryuhei Uehara for did much of this research and was very helpful then I emailed. You can see their page (with all 2263 nets) here: http://www.jaist.ac.jp/~uehara/etc/origami/nets/index-e.html

All the publications I waved around:
2007 - "Geometric Folding Algorithms" by Erik Demaine and Joseph O'Rourke
2008 - "Polygons Folding to Plural Incongruent Orthogonal Boxes" by Ryuhei Uehara
2011 - "Common Developments of Several Different Orthogonal Boxes" by Zachary Abel, Erik Demaine, Martin Demaine, Hiroaki Matsui, Günter Rote and Ryuhei Uehara
2013 - "Common Developments Of Three Incongruent Orthogonal Boxes" by Toshihiro Shirakawa and Ryuhei Uehara
2015 - "Common Developments of Three Incongruent Boxes of Area 30" by Dawei Xu, Takashi Horiyama, Toshihiro Shirakawa, and Ryuhei Uehara

Here is Geometric Folding Algorithms on Amazon if you want your own copy to wave around. But it costs 'text-book money'. amzn.to/3OYDXrF

Huge thanks to my Patreon supporters who funded those crazy nets I was sticking together. Support me and help me make more ridiculous shapes (also: videos). patreon.com/standupmaths

CORRECTIONS
- At 07:36 I place the top shape in the wrong spot. But it totally works! Look at the diagram!
- Let me know if you spot anything else! My bad taping skills do not count as a mistake.

Filming and editing by Alex Genn-Bash
Props by Lisa Mather
3D plot in Geogebra by Ben Sparks
Written and performed by Matt Parker
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

An infinite number of $1 bills and an infinite number of $20 bills would be worth the same

Stand-up Maths 2022-10-31 | Reminder if you want Patreon xmas stuff from me: be a confirmed supported by the end of November! patreon.com/standupmaths

Just Shower Thoughts: just-shower-thoughts.com/post/149064738374/an-infinite-number-of-1-bills-and-an-infinite
Tumblr blog: popinloopy.tumblr.com/post/149635744662/just-shower-thoughts-an-infinite-number-of-1
Tumblr re-blog: at.tumblr.com/curtdogg/popinloopy-just-shower-thoughts-an-infinite/sgnir8oxqsxm
reddit post: reddit.com/r/meirl/comments/y5ifrs/meirl

Limmy's Show: Whats heavier a kilogram of steel or a kilogram of feathers
youtube.com/watch?v=-fC2oke5MFg
Check out Limmy on twitch: twitch.tv/limmy

Vsauce from 2015: The Banach–Tarski Paradox
youtube.com/watch?v=s86-Z-CbaHA

Vsauce from 2016: How To Count Past Infinity
youtube.com/watch?v=SrU9YDoXE88

Veritasium from 2021: How An Infinite Hotel Ran Out Of Room
youtube.com/watch?v=OxGsU8oIWjY

Numberphile from 2014: Infinite Fractions
youtube.com/watch?v=DpwUVExX27E

Huge thanks to my Patreon supporters who funded those two giant piles of cash. Support me and help me make more ridiculous videos! patreon.com/standupmaths

CORRECTIONS
- Yes, I put in a second ball numbered 13. I'm going to claim that was on purpose. Spoooooky 13.
- Let me know if you spot anything else!

Filming and editing by Alex Genn-Bash
Industry-leading post production and VFX by Alex Genn-Bash
Written and performed by Matt Parker
Voices by Gemma Arrowsmith and Tom Crowley.
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

I Found a Whale Using Maths!

Stand-up Maths 2022-10-29 | Need a VPN for $2.11/month? I use privateinternetaccess.com/standupmaths

Huge thanks to Zoe Walker and all of the crew on Hurtigruten's expedition cruise ship MS Roald Amundsen.
Book a trip here: standupmaths.com/antarctica
See Zoe's website here: zoewalker.ca/researcher

Here is my whale on Happy Whale: happywhale.com/individual/5653;enc=262742 Should be named "Krill Bill" any day now...

"Advanced image recognition: a fully automated, high‐accuracy photo‐identifcation matching system for humpback whales" link.springer.com/article/10.1007/s42991-021-00180-9

The 3Blue1Brown video is from 03:39 in "But what is a neural network?" youtu.be/aircAruvnKk?list=PLZHQObOWTQDNU6R1_67000Dx_ZCJB-3pi&t=219
Watch the whole series here: youtube.com/playlist?list=PLZHQObOWTQDNU6R1_67000Dx_ZCJB-3pi

But we can all agree my spreadsheet is just as visually stunning. Download it for yourself: dropbox.com/s/q2bsobqoiqu6crg/Spreadsheets_and_tails.xlsx?dl=0

Kaggle: Your Machine Learning and Data Science Community kaggle.com

CORRECTIONS
- None yet! Let me know if you spot anything.

Thanks to my patreon supporters whose money I totally do not spend on Antarctic cruises. Support my channel and I can not go spend it on even more cruises! patreon.com/standupmaths

Filming by Matt Parker
Extra camera work by Lucie "I thought we were on vacation" Green
Editing by Alex Genn-Bash
Music by Howard Carter (but not the SUM PI-AMI theme)
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com
US book: penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker
UK book: mathsgear.co.uk/products/5b9fa76f230ffa140094dc43
Nerdy maths toys: http://mathsgear.co.uk

Someone improved my code by 40,832,277,770%

Stand-up Maths 2022-10-17 | YES, the improvement should be 40,832,277,770%, not what I say in the video. The "408,322,778" multiple was correct and I did the percentage the wrong way. There will not be a follow-up video to correct that.

The improvement was to my code from this video: youtube.com/watch?v=_-AfhLQfb6w

This is episode 038 of the A Problem Squared podcast which started it all: aproblemsquared.libsyn.com/038-fldxt-in-wordle-and-improv-tact-hurdle

Here is Benjamin Paaßen's full grid of all results and techniques used. It also has links to all the code as well. docs.google.com/spreadsheets/d/11sUBkPSEhbGx2K8ah6WbGV62P8ii5l5vVeMpkzk17PI/edit#gid=0

The article by "encody" I mentioned: medium.com/geeklaunch/how-to-speed-up-your-code-224-444-739-using-graphs-cc37dc395c0c

This is the reverse-frequency alphabet. Which is frequency in words, not in use (which would allow for frequency of word use; this list counts each word once).
QXJZVFWBKGPMHDCYTLNUROISEA

And whynot, a whole bunch of code. All of it is better than mine. All of it. (Even if you ran it all sequentially.)

Benjamin Paassen [bpaassen]
gitlab.com/bpaassen/five_clique
Sylvester Hesp [oisyn]
github.com/oisyn/parkerwords
Phire [phire]
github.com/phire/five_clique
Neil Coffey [neilcoffey]
github.com/neilcoffey/FunStuff/tree/main/WordleFiveWordFinder
Richard Ebeling [He3lixxx]
github.com/He3lixxx/five-words-five-letters
Phillip Alday [palday]
github.com/palday/FiveLetterWorda.jl
Diggory Blake [Diggsey]
github.com/Diggsey/five_words/tree/master
Orson Peters [orlp]
github.com/orlp/matt-parker-five-letter-clique/blob/master/src/main.rs
Bryan Redd [ae6nr]
github.com/ae6nr/25letters
Pablo Yaggi [pyaggi]
github.com/pyaggi/WordStats
Leonardo Taglialegne [miniBill]
github.com/miniBill/parkerrust
Nathan Baulch [NathanBaulch]
gist.github.com/NathanBaulch/cc26755dc89685fa209bf958e484c60d
Stefan Pochmann [pochmann]
replit.com/@pochmann/5words538?v=1
Jacob [encody]
github.com/encody/jotto-problem
Gé Weijers [gweijers]
github.com/gweijers/wordle_cover
David A. Dalrymple [davidad]
github.com/davidad/five-letters
Alex Recuenco [recuenco_alex]
github.com/alexrecuenco/five_clique
Kristin Paget [KristinPaget]
github.com/kristinpaget/fivewords
Ilya Nikolaevsky [IlyaNikolaevsky]
github.com/ilyanikolaevsky/five_words

Cheers to my Patreons for helping enable these videos. Without them test running all that code I'd never know how much better an iPad is than me. I'm sure I'll need Patreon help again soon; you can join the team here: patreon.com/standupmaths

CORRECTIONS
- Ha, I got the percentage around the wrong way. Should be 40,832,277,770% better.
- Yes, I missed the binary digit for the "A" in "BREAD" and everyone in the live premier chat noticed. Sorry about that. 🍞
- Let me know if you spot any other mistakes!

Filming and editing by Alex Genn-Bash
Some graphics by Benjamin Paaßen
Written and performed by Matt "32 days later" Parker
Music by Howard Carter
Design by Simon Wright and Adam Robinson