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when toggle format what by license comment
Jul 4, 2011 at 21:00 comment added Armin Straub Not just elementary but slick and elegant. Thank you, Wadim!
Jul 3, 2011 at 17:06 history edited Wadim Zudilin CC BY-SA 3.0
misprint fixed
Jul 3, 2011 at 16:19 history answered Wadim Zudilin CC BY-SA 3.0