#16676: Cardinality of infinite sets loops forever
-------------------------------------+-------------------------------------
Reporter: defeo | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-
Component: combinatorics | duplicate/invalid/wontfix
Keywords: sets | Resolution:
infinite_loop | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by vdelecroix):
* status: new => needs_review
* milestone: sage-6.7 => sage-duplicate/invalid/wontfix
Comment:
Now #18159 is closed and we will have
{{{
sage: Set(ZZ).difference(Set()).cardinality()
+Infinity
sage: Set(QQ).difference(Set(ZZ)).cardinality()
NotImplementedError: computation of cardinality of Set-theoretic
difference of Set of elements of Rational Field and Set of elements
of Integer Ring not yet implemented
}}}
I suggest to close this ticket as won't fix. Or do you think it is worth
to add a doctest for these?
Vincent
--
Ticket URL: <http://trac.sagemath.org/ticket/16676#comment:9>
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