id summary reporter owner description type status priority milestone component resolution keywords cc merged author reviewer upstream work_issues branch commit dependencies stopgaps
10543 Echelon form over QQ is mutable rbeezer jason was "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
Apply
trac_10543-rational-echelon-form-immutable-v2.patch, trac_10543-reviewer-rebased.patch
" defect closed minor sage-4.6.2 linear algebra fixed sage-4.6.2.alpha4 Rob Beezer Tom Coates N/A