#12000: block_matrix over cyclotomics fails
------------------------------+---------------------------------------------
Reporter: vbraun | Owner: jason, was
Type: defect | Status: new
Priority: major | Milestone: sage-4.8
Component: linear algebra | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
------------------------------+---------------------------------------------
Block matrix with blocks of size >40 fails because the cyclotomic matrix
constructor does not check for `entries=None`:
{{{
sage: F = CyclotomicField(5)
sage: block_matrix([[identity_matrix(F,41), identity_matrix(F,41)]])
---------------------------------------------------------------------------
TypeError Traceback (most recent call
last)
/home/vbraun/opt/sage-4.7.2.rc0/devel/sage-main/<ipython console> in
<module>()
/home/vbraun/Sage/sage/local/lib/python2.6/site-
packages/sage/matrix/constructor.pyc in block_matrix(*args, **kwds)
2600 row = M
2601 else:
-> 2602 row = row.augment(M)
2603
2604 # append row to final matrix
/home/vbraun/Sage/sage/local/lib/python2.6/site-
packages/sage/matrix/matrix1.so in sage.matrix.matrix1.Matrix.augment
(sage/matrix/matrix1.c:8300)()
/home/vbraun/Sage/sage/local/lib/python2.6/site-
packages/sage/matrix/matrix1.so in sage.matrix.matrix1.Matrix.new_matrix
(sage/matrix/matrix1.c:10920)()
/home/vbraun/Sage/sage/local/lib/python2.6/site-
packages/sage/matrix/matrix_space.pyc in __call__(self, entries, coerce,
copy, rows)
481 return self.zero_matrix().__copy__()
482 else:
--> 483 return self.__matrix_class(self, None,
coerce=coerce, copy=copy)
484
485 if isinstance(entries, (list, tuple)) and len(entries) > 0
and \
/home/vbraun/Sage/sage/local/lib/python2.6/site-
packages/sage/matrix/matrix_cyclo_dense.so in
sage.matrix.matrix_cyclo_dense.Matrix_cyclo_dense.__init__
(sage/matrix/matrix_cyclo_dense.cpp:5688)()
/home/vbraun/Sage/sage/local/lib/python2.6/site-
packages/sage/structure/parent.so in sage.structure.parent.Parent.__call__
(sage/structure/parent.c:7504)()
/home/vbraun/Sage/sage/local/lib/python2.6/site-
packages/sage/structure/coerce_maps.so in
sage.structure.coerce_maps.DefaultConvertMap_unique._call_
(sage/structure/coerce_maps.c:3300)()
/home/vbraun/Sage/sage/local/lib/python2.6/site-
packages/sage/structure/coerce_maps.so in
sage.structure.coerce_maps.DefaultConvertMap_unique._call_
(sage/structure/coerce_maps.c:3203)()
/home/vbraun/Sage/sage/local/lib/python2.6/site-
packages/sage/rings/number_field/number_field.pyc in
_element_constructor_(self, x)
7035 return self._coerce_from_str(x)
7036 else:
-> 7037 return self._coerce_non_number_field_element_in(x)
7038
7039 # TODO:
/home/vbraun/Sage/sage/local/lib/python2.6/site-
packages/sage/rings/number_field/number_field.pyc in
_coerce_non_number_field_element_in(self, x)
5162 except (TypeError, AttributeError), msg:
5163 pass
-> 5164 raise TypeError, type(x)
5165
5166 def _coerce_from_str(self, x):
TypeError: <type 'NoneType'>
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12000>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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