pi_circle.png

Hello there.

This is Numberphile. We mainly post videos about mathematics and just numbers in general.

A proof that e is irrational

A proof that e is irrational

Professor Ed Copeland shows a proof by Joseph "Voldemort" Fourier that e is irrational.

Check out episode sponsor http://KiwiCo.com/Numberphile for 50% off your first month of any subscription.

Ed Copeland is a physics professor at the University of Nottingham.

Check out more videos with him here: http://bit.ly/EdCopeland

And here for some meatier chats: http://bit.ly/CopelandGoesLong

And here's a previous video about e with James Grime: https://youtu.be/AuA2EAgAegE

Comment on this video on Brady's subreddit: https://redd.it/l3zuqq

Annoying Puzzles

Annoying Puzzles

Quasiperfect Numbers

Quasiperfect Numbers