#16718: Create a category for Cartesian products of groups
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Reporter: tscrim | Owner: tscrim
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.3
Component: group theory | Resolution:
Keywords: cartesian | Merged in:
product, generators, categories | Reviewers:
Authors: Travis Scrimshaw | Work issues:
Report Upstream: N/A | Commit:
Branch: | f8539f428dfa3c770b35969c1a7668a89ddfe892
public/groups/cartesian_product_category-16718| Stopgaps:
Dependencies: |
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Comment (by tscrim):
Replying to [comment:7 ncohen]:
> Could you add doctests for the infinite case ?
Done.
> Also, why `M.monoid_generators().cardinality() != float('inf')` instead
of `M.monoid_generators().is_finite()` ?
I've changed this to `in FiniteEnumeratedSets()` which is more
restrictive, but it is safer. I've also added a second safety check in
case `*_generators()` returns a tuple or a list (it shouldn't and maybe
tuple/list should be considered as a objects in
`FiniteEnumeratedSets()`?).
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Ticket URL: <http://trac.sagemath.org/ticket/16718#comment:11>
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