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Hello there.

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

Pi and Four Fingers

Pi and Four Fingers

Pi, Spigot Algorithms and why The Simpsons is not in Base 8?

Simon Singh's book is at: http://amzn.to/1fKe4Yo

Shapes and Solids of Constant Width

Shapes and Solids of Constant Width

Cyclic Numbers

Cyclic Numbers