Uploaded November 2025 | Updated September 2026, 3 weeks ago

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Robin Wilson's fourth talk on the equations that make mathematics brings us to the number that has beguiled mathematicians for thousands of years: welcome to the history of π.

You can watch other episodes in the series here: youtube.com/playlist?list=PL4d5ZtfQonW0yqeFK__FirrjjmcQFpyye

Robin's book 'Sum Stories: Equations and their origins' is available here: amazon.co.uk/Sum-Stories-Equations-Their-Origins/dp/0199607907