#14005: Span of vectors over ZZ fails with "maximum recursion depth exceeded"
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Reporter: mraum
| Owner: jason, was
Type: defect
| Status: needs_review
Priority: critical
| Milestone: sage-duplicate/invalid/wontfix
Component: linear algebra
| Resolution:
Keywords: ZZ, module, span, matrix, row_module, column_module,
RuntimeError, recursion depth | Work issues:
Report Upstream: N/A
| Reviewers: Travis Scrimshaw
Authors:
| Merged in:
Dependencies:
| Stopgaps:
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Changes (by tscrim):
* status: needs_info => needs_review
* reviewer: => Travis Scrimshaw
Comment:
This was fixed as of 5.7:
{{{
sage: mZZ = matrix(ZZ, data[0], data[1])
sage: mQQ = matrix(QQ, data[0], data[1])
sage: mQQ.column_module()
Vector space of degree 84 and dimension 55 over Rational Field
Basis matrix:
55 x 84 dense matrix over Rational Field
sage: mQQ.row_module()
Vector space of degree 55 and dimension 55 over Rational Field
Basis matrix:
55 x 55 dense matrix over Rational Field
sage: mZZ.row_module()
Free module of degree 55 and rank 55 over Integer Ring
Echelon basis matrix:
55 x 55 dense matrix over Rational Field
sage: mZZ.column_module()
Free module of degree 84 and rank 55 over Integer Ring
Echelon basis matrix:
55 x 84 dense matrix over Rational Field
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14005#comment:4>
Sage <http://www.sagemath.org>
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