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Hello there.

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

Klein Bottle Jeans

Klein Bottle Jeans

Brady Haran
Cliff Stoll, Klein Bottles
More Klein bottle videos: http://bit.ly/KleinBottles More links & stuff in full description below ↓↓↓ Visit Cliff Stoll's online store: http://www.kleinbottle.com/ More Cliff videos: http://bit.ly/Cliff_Videos Numberphile is supported by the Mathematical Sciences Research Institute (MSRI): http://bit.ly/MSRINumberphile We are also supported by Science Sandbox, a Simons Foundation initiative dedicated to engaging everyone with the process of science.

Additional information

Visit Cliff Stoll's online store: http://www.kleinbottle.com/

More Cliff videos: http://bit.ly/Cliff_Videos

The Cross Ratio

The Cross Ratio
The Six Triperfect Numbers

The Six Triperfect Numbers