#13034: Fix index in saturation of zero matrices
------------------------------+---------------------------------------------
Reporter: novoselt | Owner: jason, was
Type: defect | Status: new
Priority: major | Milestone: sage-5.1
Component: linear algebra | Keywords: sd40.5
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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Now:
{{{
sage: m = matrix(ZZ, 3)
sage: m.index_in_saturation()
---------------------------------------------------------------------------
ValueError Traceback (most recent call
last)
/home/novoselt/sage-5.1.beta0/devel/sage-main/<ipython console> in
<module>()
/home/novoselt/sage-5.1.beta0/local/lib/python2.7/site-
packages/sage/matrix/matrix_integer_dense.so in
sage.matrix.matrix_integer_dense.Matrix_integer_dense.index_in_saturation
(sage/matrix/matrix_integer_dense.c:17074)()
/home/novoselt/sage-5.1.beta0/local/lib/python2.7/site-
packages/sage/matrix/matrix_integer_dense_saturation.pyc in
index_in_saturation(A, proof)
308 A = A.transpose()
309 A = A.hermite_form(proof=proof,include_zero_rows=False)
--> 310 return abs(A.determinant(proof=proof))
311
312
/home/novoselt/sage-5.1.beta0/local/lib/python2.7/site-
packages/sage/matrix/matrix_integer_dense.so in
sage.matrix.matrix_integer_dense.Matrix_integer_dense.determinant
(sage/matrix/matrix_integer_dense.c:25359)()
ValueError: self must be a square matrix
}}}
while it should be 1.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13034>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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