#19632: Haemers srgs
-------------------------+-------------------------------------------------
Reporter: | Owner:
dimpase | Status: needs_review
Type: | Milestone: sage-6.10
enhancement | Resolution:
Priority: major | Merged in:
Component: graph | Reviewers:
theory | Work issues:
Keywords: | Commit:
Authors: Dima | 0b551841289a54e383c73b2e57237d9a6bd52e2e
Pasechnik | Stopgaps:
Report Upstream: N/A |
Branch: |
u/dimpase/haemers |
Dependencies: |
#19463, #19624 |
-------------------------+-------------------------------------------------
Comment (by dimpase):
Replying to [comment:11 ncohen]:
> > Are you saying that relabel() can reorder vertices? Indeed, the code
depends on it keeping them
> > in the same order.
>
> 'reorder' ? Nono, it will not 'reorder' them, i.e. the ith vertex of
g.vertices() is the ith vertex of g.vertices() after a relabel
>
> {{{
> if perm is None:
> perm = dict({v:i for i,v in enumerate(self.vertices())})
> }}}
>
> But if you have to explain in the doc what exactly the ith vertex
represents when he provides a partition, well, we might as well use their
original labels (i.e. before relabelling).
`partition` is partition of the points of the underlying `hyperoval` (not
a partition of vertices).
{{{
* "partition" -- if "None" (default), pair each i-th point of
"hyperoval" with (i+1)-th. Otherwise, specifies the pairing in
the format ((i_1,i'_1),(i_2,i'_2),...).
* "hyperoval" -- a hyperoval defining T_2^*(q)^*. If "None"
(default), the classical hyperoval obatined from a conic is used.
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/19632#comment:12>
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.
