#19275: handle empty matroid in partition
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Reporter: chaoxu | Owner:
Type: defect | Status: needs_review
Priority: trivial | Milestone: sage-6.9
Component: matroid theory | Resolution:
Keywords: | Merged in:
Authors: Chao Xu | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/chaoxu/partitiondividebyzero | 93346eaa75889e5bb189a5b29ccbc727474ae708
Dependencies: | Stopgaps:
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Comment (by chaoxu):
> You might want to consider changing things so that these could give you
an empty matroid.
I don't see the use case of a empty matroid, but this would work:
{{{
Matroid(groundset=[], bases=[[]])
}}}
> is this correct?
Yes, it is correct. The empty set is always a base.
> Could you use that for the test since it uses the top-level interface?
done
--
Ticket URL: <http://trac.sagemath.org/ticket/19275#comment:9>
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