#19098: implement Taylor 2-graphs for U_3(q) and related srg's
-------------------------------------+-------------------------------------
Reporter: dimpase | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.9
Component: graph theory | Resolution:
Keywords: | Merged in:
Authors: Dima Pasechnik | Reviewers:
Report Upstream: N/A | Work issues:
Branch: public/19098 | Commit:
Dependencies: #18972, #18997, | 4fd56a1f10901663ea001460dd2dfe0da666f4c8
#19099, #19133 | Stopgaps:
-------------------------------------+-------------------------------------
Comment (by dimpase):
Replying to [comment:36 ncohen]:
> Helloooooooooo Dima,
>
> Two questions about this branch:
>
> - It seems that you do not use the `taylor_twograph` function anywhere.
If you
> think that it is useful in its own right I do not mind, but I couldn't
help
> but notice the apparently large overlap between the code of
`taylor_twograph`
> and the code of `TaylorTwographDescendantSRG`. Couldn't you let one of
the two
> functions call the other? Especially since with the speedup commit, it
takes
> less time to build the graph.
OK, see my last commit.
>
> - I do not understand the point of this line. Could you explain? To me
all it
> does is add a vertex `v0`
> {{{
> G = H.union(Graph([[v0], lambda x, y: x != y])) # to make sure
vertices are not relabeled
> }}}
>
it makes `Graph([v0])` have vertex named by what's in `v0` rather than
just by number 0.
And so `G`'s vertex names stay uniform. Perhaps there is a less ugly way,
I don't know.
----
New commits:
||[http://git.sagemath.org/sage.git/commit/?id=4fd56a1f10901663ea001460dd2dfe0da666f4c8
4fd56a1]||{{{use TaylorTwographSRG in taylor_twograph}}}||
--
Ticket URL: <http://trac.sagemath.org/ticket/19098#comment:39>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
--
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to [email protected].
To post to this group, send email to [email protected].
Visit this group at http://groups.google.com/group/sage-trac.
For more options, visit https://groups.google.com/d/optout.
