#18972: twographs and Seidel switching
-------------------------------------+-------------------------------------
       Reporter:  dimpase            |        Owner:
           Type:  enhancement        |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-6.9
      Component:  graph theory       |   Resolution:
       Keywords:                     |    Merged in:
        Authors:                     |    Reviewers:
Report Upstream:  N/A                |  Work issues:
         Branch:                     |       Commit:
  u/dimpase/seidelsw                 |  0a2dae4d4836e37f00bcc2af10dbb1b1d0313c88
   Dependencies:  #18960, #18948,    |     Stopgaps:
  #18988, #18991                     |
-------------------------------------+-------------------------------------

Comment (by dimpase):

 Replying to [comment:46 ncohen]:
 > > it's only because this `something` might return more than `True` or
 `False`;
 > > namely, `Unknown`.
 > > (this is your design, not mine...:-)
 >
 > Sorry, you cannot blame soembody else for that one. Remove `True ==`,
 and it still works.

 This not a feature I would like to rely on. Using a non-boolean function
 as a boolean one
 smells of a hack.

 >
 > > It will add more automatically, as we build more graphs on v+1
 vertices which are tagged "2-graph".
 >
 > Any clue how we can build those entries? There is a *LOT* of them `:-/`
 for some of them an explicit construction is referred to, and then it's
 just a question of
 work. How many of these are so that "2-graph" is the only clue?

--
Ticket URL: <http://trac.sagemath.org/ticket/18972#comment:47>
Sage <http://www.sagemath.org>
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