#18613: Errors with is_isomorphic() for trivial cones
------------------------+----------------------------
Reporter: mjo | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.8
Component: geometry | Keywords:
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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Random testing (from Ticket #18454) reveals the following. I'm not
familiar with the `Fan` stuff, so this might not even be an issue
mathematically.
{{{
sage: K = Cone([], ToricLattice(0))
sage: K.is_isomorphic(K)
...
KeyError: (frozenset([]), frozenset([]))
}}}
{{{
sage: K = Cone([(0,)])
sage: K.is_isomorphic(K)
...
TypeError: 'bool' object has no attribute '__getitem__'
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/18613>
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