Uploaded June 2024 | Updated September 2026, 2 weeks ago
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: 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
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: 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
