A Colorful Unsolved Problem Numberphile

James Grime on the Hadwiger–Nelson

The Four

Main video is at: https://youtu.be/niaeV_NHh-o Featuring James Grime on the Hadwiger–Nelson

Do odd perfect numbers exist? Head to https://brilliant.org/veritasium to start your free 30-day trial, and the first 200 people get ...

The Josephus

Featuring Matt Parker... Part 2 (solution) here: https://youtu.be/pasyRUj7UwM More links & stuff in full description below ...

This video continues from a previous video --- https://youtu.be/kE3OuzlkUnU Fields Medallist Sir Timothy Gowers discusses Van ...

Main video: https://youtu.be/NgbK43jB4rQ Featuring Dr james Grime. More Grime: http://bit.ly/grimevideos

Catch David on the

Extended math version: http://youtu.be/ugbWqWCcxrg?t=2m32s A version for Dummies: https://youtu.be/7u6kFlWZOWg More ...

The famed Kakeya Needle

Professor Ron Graham discusses the famed Happy Ending

Talking about Grapheme to

Featuring James Grime... Check out Jane Street's "Puzzle Page" for great brain teasers ...

Featuring Ben Sparks... Check out Brilliant (get 20% off their premium service): https://brilliant.org/

The Great Courses Plus (free trial): http://ow.ly/RqOr309wT7v This video features Alex Bellos. More info and links in full ...

Fields Medallist Sir Timothy Gowers discusses Van der Waerden's theorem. Interview continues on Numberphile2 at: ...