#13304: Very inefficient scalar multiplication on FreeModule_ambient with
somewhat
large rank
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Reporter: daniels | Owner: daniels
Type: defect | Status: needs_review
Priority: minor | Milestone: sage-5.3
Component: linear algebra | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by tfeulner):
The question is, in which situations do we actually ask for the basis of
the ambient space? I found out that there is a similar problem when
constructing subspaces, see
[https://groups.google.com/d/topic/sage-devel/ULcyJECqT4M/discussion sage-
devel]. Unfortunately, this is not solved with this patch.
Surprisingly, there is a difference between the fields {{{GF(4, 'a')}}}
and {{{QQ}}}.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13304#comment:5>
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