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cartesian product of modules over different base rings #19375

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dkrenn opened this issue Oct 8, 2015 · 0 comments
Open

cartesian product of modules over different base rings #19375

dkrenn opened this issue Oct 8, 2015 · 0 comments
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c: categories p: major / 3 t: bug

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@dkrenn
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dkrenn commented Oct 8, 2015

We have

sage: E = CombinatorialFreeModule(ZZ, [1,2])
sage: F = CombinatorialFreeModule(QQ, ['a', 'b'])
sage: cartesian_product([E, F])
Traceback (most recent call last):
...
AttributeError: 'CommutativeAdditiveGroups.CartesianProducts_with_c' object has no attribute 'FiniteDimensional'

The error message does not say what is going on.

See also the comments on #18182, comment 20, 1.

CC: @behackl

Component: categories

Issue created by migration from https://trac.sagemath.org/ticket/19375
@dkrenn dkrenn added this to the sage-6.9 milestone Oct 8, 2015
@mkoeppe mkoeppe removed this from the sage-6.9 milestone Dec 29, 2022
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@mkoeppe @dkrenn