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Hello there.

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

Golden Proof

Golden Proof

Part Two of Golden Ratio Trilogy
Proof that an infinite number of sequences have that "golden ratio" property - not just the Fibonacci Numbers.

Next in the trilogy: http://youtu.be/PeUbRXnbmms

Matt's signed book (& extra goodies): http://bit.ly/Matt_Signed
Amazon (UK): http://bit.ly/Matt_4D_UK
Amazon (US): http://bit.ly/Matt_4D_US

All links to videos in this four-part trilogy:
Brady Numbers: http://youtu.be/D8ntDpBm6Ok
Proof: http://youtu.be/dTWKKvlZB08
Lucas Numbers: http://youtu.be/PeUbRXnbmms
Extra bit: http://youtu.be/bTxiS28M41c

Lucas Numbers

Lucas Numbers

The Three Square Geometry Problem

The Three Square Geometry Problem