#10543: Echelon form over QQ is mutable
------------------------------+---------------------------------------------
Reporter: rbeezer | Owner: jason, was
Type: defect | Status: new
Priority: minor | Milestone:
Component: linear algebra | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Which is not the norm for matrices over other rings.
{{{
sage: A=matrix(QQ,2,range(4))
sage: B=matrix(ZZ,2,range(4))
sage: C=A.echelon_form()
sage: D=B.echelon_form()
sage: C.is_mutable()
True
sage: D.is_mutable()
False
}}}
See http://groups.google.com/group/sage-
devel/browse_thread/thread/ef90d24da0ee704c
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10543>
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