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when toggle format what by license comment
Dec 22, 2010 at 10:09 comment added Barmaley 2000 yrs ago :)
Dec 22, 2010 at 7:20 comment added Greg The Pythagorean theorem is public domain now!? When did the copyright expire? :-)
Dec 22, 2010 at 7:11 history answered James Santiago CC BY-SA 2.5