#13990: Bug fix and small improvement of spanning_trees_count
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Reporter: azi | Owner: jason, ncohen, rlm
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.7
Component: graph theory | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by azi):
The guys there seems to agree that
* The empty graph is not a tree. (OK in Sage)
* The empty graph is a forest. (OK in Sage)
* The empty graph is not connected. (FAIL in Sage)
* The number of spanning trees in the empty graph is 0. (FAIL in Sage)
Now I would suggest that I change the patch so that all things work as
expected by the points above. What you think mr Cohen?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13990#comment:10>
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