#18972: twographs and Seidel switching
-------------------------------------+-------------------------------------
       Reporter:  dimpase            |        Owner:
           Type:  enhancement        |       Status:  needs_work
       Priority:  major              |    Milestone:  sage-6.9
      Component:  graph theory       |   Resolution:
       Keywords:                     |    Merged in:
        Authors:                     |    Reviewers:  Nathann Cohen
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
  u/dimpase/seidelsw                 |  a3362414d8710523b1a7f118a96fb4617be36637
   Dependencies:  #18960, #18948,    |     Stopgaps:
  #18988, #18991, #18986, #19018,    |
  #19019                             |
-------------------------------------+-------------------------------------

Comment (by dimpase):

 Replying to [comment:100 ncohen]:
 > > I don't call `is_t_design()` this way!
 >
 > Line 2 of `is_twograph`.
 >
 I am talking about line 1 of `is_regular_twograph()`...

 Besides, what's wrong about the line 2 of is_twograph`?
 It's certainly not where the bottleneck is (the latter is in lines 3-4).

--
Ticket URL: <http://trac.sagemath.org/ticket/18972#comment:101>
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