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

Prime Knots

Prime Knots

They are knot what you think!

Primes, Composites and the usefulness of knots....

Second in a series of videos about knots. Here we again speak with Carlo H. Séquin from UC Berkeley.

More videos to come at: http://bit.ly/Knot-a-Phile

Edit and animation by Pete McPartlan. Film and interview by Brady Haran

With thanks to Rob Scharein for the use of his software Knotplot - http://www.knotplot.com/

Möbius Knots and Roller Coasters

Möbius Knots and Roller Coasters

The Curse of Lane 8

The Curse of Lane 8