#18186: Add cardinality() to MatrixSpace
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Reporter: jmantysalo | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.6
Component: linear algebra | Resolution:
Keywords: | Merged in:
Authors: vdelecroix | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by vdelecroix):
For the second point I would modify the constructor (i.e. the '__init__'
method) with just before the call to `Parent.__init__`
{{{
if self.__nrows == 0 and self.__ncols == 0:
is_finite = True
else:
is_finite = None
try:
is_finite = base_ring.is_finite()
except (AttributeError,NotImplementedError):
pass
if is_finite is True:
category = category.Finite()
elif is_finite is False:
category = category.Infinite()
}}}
Vincent
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Ticket URL: <http://trac.sagemath.org/ticket/18186#comment:2>
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