Featuring Professor Volkmar Welker from Philipps-Universität Marburg. More links & stuff in full description below ↓↓↓ T-Shirt, Mug, Sticker based on this: Professor Volkmar Welker: Triangle videos: Numberphile is supported…

Featuring Neil Sloane. See for Brilliant and get 20% off their premium service (episode sponsor) More links & stuff in full description below ↓↓↓ Correction at 4:08… Neil says “then…

Featuring Professor Tony Padilla. See for Brilliant and get 20% off their premium service (episode sponsor) More links & stuff in full description below ↓↓↓ Yitang Zhang strikes again… Discrete…