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Apr 13, 2017 at 12:48 history edited CommunityBot
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Jul 7, 2013 at 14:41 history edited Mohammad Al-Turkistany
Added permutations Tag
Jun 22, 2013 at 16:41 comment added Mohammad Al-Turkistany BTW, A simple variation came up to my mind and I am not sure about its complexity. Can you identify the fixed-point free sum of two permutations in polynomial time? (We require that the two permutations disagree at each position i.e. $\pi_i \ne \sigma_i$ for all $i$)
Jun 18, 2013 at 13:13 answer added anonymous moose timeline score: 4
Jun 17, 2013 at 17:21 vote accept Peter Shor
Jun 17, 2013 at 10:30 history edited Mohammad Al-Turkistany
edited tags
Jun 17, 2013 at 10:29 answer added Mohammad Al-Turkistany timeline score: 20
Jun 16, 2013 at 17:01 history tweeted twitter.com/#!/StackCSTheory/status/346311482025324545
Jun 16, 2013 at 15:04 history asked Peter Shor CC BY-SA 3.0