#6904: [with patch, need review] change ring broken over QQ and GF(2)
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Reporter: was | Owner: was
Type: defect | Status: needs_review
Priority: major | Milestone: sage-4.5
Component: linear algebra | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Changes (by cpernet):
* status: new => needs_review
Comment:
The problem is due to the fact that with p=2, the change_ring() method
should not create a matrix_modn_dense but a matrix_mod2_dense (wrapping
m4ri).
I added this special case.
Meanwhile, it revealed a conflict in the declaration of ONE (in
libs/pari/gens.pyx, and in m4ri). So I renammed the macros in pari/gens.*.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6904#comment:4>
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