#11309: Sage sees -x +y > 0, -y + x >= 0, and x -y > 0 as equivalent
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Reporter: tnv | Owner: burcin
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.7.1
Component: symbolics | Keywords: inequality equality
relational sd31 __richcmp__
Work_issues: | Upstream: N/A
Reviewer: Karl-Dieter Crisman | Author: Keshav Kini, Burcin
Erocal
Merged: | Dependencies:
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Comment(by kcrisman):
{{ Sage 4.7 (prepatched)
sage: (- x + y == 0) == (0 == -x + y)
True
sage: (-x + y == 0) == (0 == -x + y)
True
sage: (x < y) == (y > x)
True
Sage 4.7 (postpatched)
sage: (- x + y == 0) == (0 == -x + y)
False
sage: (-x + y == 0) == (0 == -x + y)
False
sage: (x < y) == (y > x)
False
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11309#comment:23>
Sage <http://www.sagemath.org>
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