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

How to always win at Dots and Boxes

How to always win at Dots and Boxes

Brady Haran
Elwyn Berlekamp, Games
Alex Bellos discusses how the Incans used knots in string (Quipu) to record numbers.Check out Brilliant (get 20% off their premium service): https://brillian...

This video features 'games legend' Elwyn Berlekamp.
Amazons with Elwyn: https://youtu.be/kjSOSeRZVNg

Elwyn's book on Dots and Boxes: http://bit.ly/DotsBoxesBook
Elwyn's Winning Ways on Amazon: http://amzn.to/1BIA6UB

Extra footage about bigger boards: http://youtu.be/rBngUo0JTzs

Something special about 399 (and 2015)

Something special about 399 (and 2015)
Sum of Natural Numbers (second proof and extra footage)

Sum of Natural Numbers (second proof and extra footage)