#14032: determinant() of integer matrices of size in [51,63] broken
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Reporter: jdemeyer | Owner: jason, was
Type: defect | Status: new
Priority: critical | Milestone: sage-5.7
Component: linear algebra | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Description changed by jdemeyer:
Old description:
> {{{
> sage: random_matrix(ZZ,60).det()
> [...]
> RuntimeError: maximum recursion depth exceeded while calling a Python
> object
> }}}
New description:
{{{
sage: random_matrix(ZZ,60).det()
[...]
RuntimeError: maximum recursion depth exceeded while calling a Python
object
}}}
It seems that the "padic" algorithm for integer determinants uses one
implementation for sizes <= 50 and another implementation for sizes >= 64
and is broken in between those sizes (the reason is suspect two
implementations is that size 64 is usually a lot faster than size 50).
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14032#comment:3>
Sage <http://www.sagemath.org>
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