#15245: Pfaffian of a skew-symmetric matrix
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       Reporter:  darij                          |        Owner:
           Type:  enhancement                    |       Status:
       Priority:  major                          |  needs_review
      Component:  combinatorics                  |    Milestone:  sage-5.13
       Keywords:  matrix, sage-combinat,         |   Resolution:
  pfaffian                                       |    Merged in:
        Authors:  Darij Grinberg                 |    Reviewers:
Report Upstream:  N/A                            |  Work issues:
         Branch:                                 |       Commit:
   Dependencies:  #14117                         |     Stopgaps:
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Comment (by tscrim):

 Hey Darij,

 Sorry for letting this slip away.

 For the skew-symmetric, how about instead calling `is_skew_symmetric()`
 and then checking that the diagonal entries are 0 with
 {{{
 all(d == 0 for d in self.diagonal())
 }}}
 One more minor thing: the `AUTHORS:` block shouldn't be indented.

 Best,[[BR]]
 Travis

--
Ticket URL: <http://trac.sagemath.org/ticket/15245#comment:12>
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