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"Chinese Proof" of Pythagorean theorem (little orange square is a², medium orange square is b², large orange square is c²). Harald Hanche-Olsen: righthand picture above appears in Chou pei suan ching 周髀算經 (ca. 1100B.C.), for special (3,4,5) pythagorean triple. earliest known proof of Pythagoras is given by Zhoubi suanjing (Arithmetical Classic of the Gnomon and the Circular Paths of Heaven)

"Chinese Proof" of Pythagorean theorem (little orange square is a², medium orange square is b², large orange square is c²). Harald Hanche-Olsen: righthand picture above appears in Chou pei suan ching 周髀算經 (ca. 1100B.C.), for special (3,4,5) pythagorean triple. earliest known proof of Pythagoras is given by Zhoubi suanjing (Arithmetical Classic of the Gnomon and the Circular Paths of Heaven)

The math that every designer needs to know

Mathartstravaganza Amazing gallery of mathematical art from the 2013 Bridges Conference, a ton more at the link. Dig through a decade worth of math art in the Bridges archive. If anyone needs me, I’ll...

The first six books of the Elements of Euclid, ... a fascinating book -- both visually & in terms of mathematics -- that uses colored figures in place of words to describe Euclidean geometry. (published late 1800s)

The first six books of the Elements of Euclid, ... a fascinating book -- both visually & in terms of mathematics -- that uses colored figures in place of words to describe Euclidean geometry. (published late 1800s)

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