#16836: __neg__ fails in CartesianProduct of CombinatorialFreeModule
-------------------------+-------------------------------------------------
Reporter: | Owner:
cnassau | Status: needs_review
Type: | Milestone: sage-6.4
defect | Resolution:
Priority: major | Merged in:
Component: | Reviewers:
categories | Work issues:
Keywords: | Commit:
Authors: | 756c053d4779fa90485b528c930d7e4538456cc0
Christian Nassau | Stopgaps:
Report Upstream: N/A |
Branch: |
u/cnassau/16836 |
Dependencies: |
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Changes (by {'newvalue': u'Christian Nassau', 'oldvalue': ''}):
* status: new => needs_review
* commit: => 756c053d4779fa90485b528c930d7e4538456cc0
* branch: => u/cnassau/16836
* author: => Christian Nassau
Comment:
the attached patch fixes the problem in the indicated way: the offending
doctest has been removed.
after all, the offendig behaviour (x in N, but -x not in N) is well known
from the natural numbers, and not much of a problem.
----
New commits:
||[http://git.sagemath.org/sage.git/commit/?id=11ba5af6a7c53bf58c6ea2dad080333e87cfbd26
11ba5af]||{{{Ticket 16836: inversion was broken for cartesian products of
CombinatorialFreeModules}}}||
||[http://git.sagemath.org/sage.git/commit/?id=756c053d4779fa90485b528c930d7e4538456cc0
756c053]||{{{Ticket 16836: add doctest that negates an element of a
cartesian product of CombinatorialFreeModules}}}||
--
Ticket URL: <http://trac.sagemath.org/ticket/16836#comment:2>
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