#12463: Polyehdron intersection and equality inconsistencies
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Reporter: lftabera | Owner: mhampton
Type: defect | Status: new
Priority: major | Milestone: sage-5.0
Component: geometry | Keywords: polyhedron, equality, intersection
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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First of all, polyhedron __eq__ documentation is wrong. It states
"""
def __eq__(self, other):
"""
Test whether ``self`` is a strict sub-polyhedron of ``other``.
"""
This does not correspond with the actual code nor the test.
Morevover, intersection of polyhedra produces output with wrong internal
representation.
{{{
sage: P=Polyhedron([[0,0]], rays=[[1,1]])
sage: Q1=Polyhedron([[0,0],[1,1]])
sage: Q2=Polyhedron([[1,0],[0,1]])
sage: Q=Q1.intersection(Q2)
sage: Q==P
True
sage: Q < P
False
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12463>
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