#8612: potentially horrible multimodular matrix echelon bug
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Reporter: was | Owner: was
Type: defect | Status: needs_review
Priority: blocker | Milestone: sage-4.4
Component: linear algebra | Keywords:
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by was):
Yes, you're right, it needs to be
{{{
hdE = long((d*E).height())
}}}
The algorithm is described with proof here:
http://wstein.org/books/modform/modform/linear_algebra.html#echelon-forms-
over
I've posted a part2 patch that fixes the issue you've pointed out.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8612#comment:3>
Sage <http://www.sagemath.org>
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