#18183: Implement two matroid polytopes
-------------------------+-------------------------------------------------
Reporter: | Owner:
chapoton | Status: needs_review
Type: | Milestone: sage-6.7
enhancement | Resolution:
Priority: major | Merged in:
Component: | Reviewers:
matroid theory | Work issues: documentation
Keywords: | Commit:
matroid polytope | 6484e7198d41b716f4cb70dcf56ea7d849a6ce90
Authors: | Stopgaps:
Frédéric Chapoton |
Report Upstream: N/A |
Branch: |
u/chapoton/18183 |
Dependencies: |
-------------------------+-------------------------------------------------
Comment (by vdelecroix):
Hum. I did have a look at matroids `independent_r_sets` method. And the
way to generate all independent set is to generate all sets and filter
those which are independent... really!
{{{
res = []
for X in combinations(self.groundset(), r):
X = frozenset(X)
if self._rank(X) == len(X):
res.append(X)
return res
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/18183#comment:13>
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.
