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Hello there.

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

Infinite Circles

Infinite Circles

Professor Holly Krieger discusses filling an infinite plane with circles - without them touching or overlapping.

More videos with Holly (playlist): http://bit.ly/HollyKrieger

More videos about circles: https://www.youtube.com/playlist?list=PLt5AfwLFPxWJnoD6PZVQJvDW3l_cIpuiw

Dr Holly Krieger is the Corfield Lecturer at the University of Cambridge and a Fellow at Murray Edwards College: https://www.dpmms.cam.ac.uk/~hk439/

The Phistomephel Ring

The Phistomephel Ring

Egyptian Fractions

Egyptian Fractions