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when toggle format what by license comment
Oct 16, 2012 at 16:30 comment added Dilip Sarwate Also asked on math.SE math.stackexchange.com/q/214844/15941
Oct 16, 2012 at 15:10 comment added an12 What does H stand for?
Oct 16, 2012 at 14:16 history asked Richard Guo CC BY-SA 3.0