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#260875
Tue 28 Oct 2014 12:30:PM
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Joined: Feb 2001
Posts: 381,903
Launch Director
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Launch Director
Joined: Feb 2001
Posts: 381,903 |
My math history class is currently studying non-Euclidean geometry, which means we've studied quite a few "proofs" of Euclid's fifth postulate, also known as the parallel postulate. -- Read more on ScientificAmerican.com Source: In Which Omar Khayyam Is Grumpy with Euclid
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