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Apr 13, 2017 at 12:19 history edited CommunityBot
replaced http://math.stackexchange.com/ with https://math.stackexchange.com/
Sep 14, 2016 at 3:13 comment added Dave Lampert Thanks for your answer, although to be honest, it's a little over my head. Were you saying that there are other solutions for $B$, or just this one? BTW, I revised by original question to be clearer and to use the TeX notation.
Sep 13, 2016 at 20:48 history edited Igor Rivin CC BY-SA 3.0
added reference
Sep 13, 2016 at 20:39 history answered Igor Rivin CC BY-SA 3.0