#18290: enhanced sets and cartesian products
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Reporter: vdelecroix | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.7
Component: categories | Resolution:
Keywords: cartesian_product | Merged in:
Authors: Vincent Delecroix | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/vdelecroix/18290 | 2eff7ab551257766a43b3d9fa7b1e637b07188b0
Dependencies: | Stopgaps:
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Comment (by vdelecroix):
Replying to [comment:15 jmantysalo]:
> Wasn't there just discussion about avoiding `self` in docstrings at
sage-devel? I.e. "Return the cardinality of self." should be "of this set"
or "of this cartesian product".
I can do that.
> Code seems to work. Just to make sure: should `cartesian_product([ZZ,
ZZ]).unrank(42)` work like for example `ZZ.unrank(42)` works?
No. The order of enumeration of a cartesian products is lexicographic. So
a cartesian product of infinite enumerated sets should even '''not''' be
an enumerated set!
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Ticket URL: <http://trac.sagemath.org/ticket/18290#comment:16>
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