#18613: Errors with is_isomorphic() for trivial cones
-------------------------------------+-------------------------------------
Reporter: mjo | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.8
Component: geometry | Resolution:
Keywords: | Merged in:
Authors: Andrey | Reviewers:
Novoseltsev | Work issues:
Report Upstream: N/A | Commit:
Branch: | cd6aec8491552051be48bfb278d43cf0798e8ef6
u/novoselt/errors_with_is_isomorphic___for_trivial_cones| Stopgaps:
Dependencies: |
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Comment (by novoselt):
This ticket is a treasure chest of chained bugs, the latest one is
{{{
sage: K = Cone([(0,0)]); K.is_isomorphic(K)
}}}
which, after fixing a corner case in fan code, boils down to
{{{
sage: matrix(2, 1).echelon_form().is_mutable()
False
sage: matrix(2, 0).echelon_form().is_mutable()
True
}}}
working on it...
--
Ticket URL: <http://trac.sagemath.org/ticket/18613#comment:7>
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