A blog about math, puzzles, teaching, and academic technology

Euler's Gem: The polyhedron formula and the birth of topology

Princeton University Press

2008

Euler's Gem Facebook page

Buy it:

Princeton University Press

Amazon

Princeton University Press

2008

Euler's Gem Facebook page

Buy it:

Princeton University Press

Amazon

- Roy Adler (1931-2016)—influential researcher in ergodic theory and dynamical systems bit.ly/2a69Quw 8 hours ago
- RT @erikrtou: Leonhard Euler, the WolframAlpha of his day, shows that 1,000,009 is not prime. #euler2016 https://t.co/xdpYzVRq26 9 hours ago
- RT @MathforGrownups: Without geometry, life is pointless. 13 hours ago
- RT @JimZub: When they say "The camera adds 10 pounds" they're not kidding. Here's the effect with different camera lenses: https://t.co/xmw… 14 hours ago
- RT @mathhombre: Awesome graph theory result via @futility_closet futilitycloset.com/2016/07/26/spe… (Prime for some #mathart) 14 hours ago

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- What is the difference between a theorem, a lemma, and a corollary?
- Music is math: ten songs about mathematics
- Sugihara's Circle/Square Optical Illusion
- Is or an inclusive or or an exclusive or?
- Playing the probabilities in Settlers of Catan
- E-Z Pass, speeding tickets, and the mean value theorem
- LaTeX now available in Google Docs
- Volumes of n-dimensional balls
- What are p-adic numbers?

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