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S Apr 15, 2017 at 20:23 history suggested Ali Taghavi
I add a tag
Apr 15, 2017 at 20:11 review Suggested edits
S Apr 15, 2017 at 20:23
Apr 15, 2017 at 19:08 answer added Ali Taghavi timeline score: 2
Nov 25, 2014 at 22:56 answer added loup blanc timeline score: 5
Nov 23, 2014 at 3:29 comment added M. Lin Numerical experiment suggests that the real part of the eigenvalues of $U$ may be negative. That is, $c\ge \sqrt{2}$.
Nov 23, 2014 at 3:25 history asked M. Lin CC BY-SA 3.0