#19779: Hadamard difference set
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Reporter: vdelecroix | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.0
Component: combinatorial | Resolution:
designs | Merged in:
Keywords: | Reviewers: Nathann Cohen
Authors: Vincent Delecroix | Work issues:
Report Upstream: N/A | Commit:
Branch: | 7389c9956523225605c0b67bb668f9e2ced07551
u/vdelecroix/19779 | Stopgaps:
Dependencies: #19778 |
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Comment (by vdelecroix):
Replying to [comment:20 ncohen]:
> You mean `is_prime(k-2*l)` ? `:-P`
>
> Anyway, despite being a useless abstraction, I expect that ZZ is in a
better state than the combinat parents.
at least
{{{
sage: a = 3
sage: ZZ(a) is a
True
sage: %timeit ZZ(a)
10000000 loops, best of 3: 109 ns per loop
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/19779#comment:21>
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