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Jul 2, 2013 at 20:11 answer added John Voight timeline score: 13
Jul 10, 2012 at 7:41 vote accept anonymous
Jul 7, 2012 at 6:01 comment added David Hansen The theory of the Hilbert symbol reduces your question to a bunch of congruence conditions on $a,b$.
Jul 6, 2012 at 15:55 answer added Will Sawin timeline score: 5
Jul 6, 2012 at 13:24 history asked anonymous CC BY-SA 3.0