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Nov 29, 2014 at 23:09 history closed abx
Stefan Kohl
Ryan Budney
Denis Serre
paul garrett
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Nov 26, 2014 at 11:55 vote accept Jiro
Nov 26, 2014 at 6:07 review Close votes
Nov 29, 2014 at 23:09
Nov 26, 2014 at 0:25 answer added Günter Rote timeline score: 2
Nov 25, 2014 at 15:18 comment added Jiro @Joonas: Sorry, I just realized that I was quite loose on the restrictions. I'll edit the question.
Nov 25, 2014 at 15:15 history edited Jiro CC BY-SA 3.0
added 86 characters in body
Nov 25, 2014 at 15:15 comment added Joonas Ilmavirta Have you tried what happens if $A=-I$ and $\Phi=\frac12I$?
Nov 25, 2014 at 15:06 history asked Jiro CC BY-SA 3.0