#19918: substitute exp(-x) with x infinity fails
-------------------------------------------------+-------------------------
Reporter: vdelecroix | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-7.1
Component: symbolics | Resolution:
Keywords: bug | Merged in:
Authors: | Reviewers:
Report Upstream: Reported upstream. Developers | Work issues:
acknowledge bug. | Commit:
Branch: | Stopgaps:
Dependencies: |
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Comment (by rws):
The reason is
{{{
sage: hash(SR(-oo))
2886518159
sage: hash((-x).subs(x=oo))
81231252
sage: hash((x).subs(x=-oo))
2886518159
}}}
See #19927 and #19928 for related bugs.
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Ticket URL: <http://trac.sagemath.org/ticket/19918#comment:4>
Sage <http://www.sagemath.org>
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