#18972: twographs and Seidel switching
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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 | 4e077dbd9d039c9c375227269cda8a0ce4c0d326
Dependencies: #18960, #18948, | Stopgaps:
#18988, #18991, #18986, #19018, |
#19019 |
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Comment (by dimpase):
Replying to [comment:95 ncohen]:
> > > - `T.is_t_design(k=3)` -- use `is_uniform`.
> >
> > I cannot, I need to test that it is a 2-design with blocks of size 3.
>
> `T.is_t_design(k=3)` is *equivalent* to `is_regular+is_uniform(k=3)`.
This is actually just not true. `is_regular+is_uniform(k=3)` is equivalent
to `is_t_design(t=1, k=3)`.
In fact, all I need `is_uniform(k=3)`, which is equivalent to to
`is_t_design(k=3)`.
--
Ticket URL: <http://trac.sagemath.org/ticket/18972#comment:112>
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