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Sep 5, 2014 at 0:47 comment added Igor Rivin In any case, the magic words are "Floquet Theory", one lives and learns...
Sep 4, 2014 at 23:49 comment added Igor Rivin Right, this was what I also conjectured, but it is hard to tell (since the solution blows up very fast).
Sep 4, 2014 at 18:23 history answered Michael Renardy CC BY-SA 3.0