#17852: Small cleanup in rings.arith and rings.integer
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Reporter: vdelecroix | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.6
Component: basic arithmetic | Resolution:
Keywords: | Merged in:
Authors: Vincent Delecroix | Reviewers: Jeroen Demeyer
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/vdelecroix/17852 | faf206825e26344ae20fbe41363b00ba4e301c07
Dependencies: #16878 | Stopgaps:
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Comment (by jdemeyer):
Replying to [comment:79 vdelecroix]:
> Actually, it does matter. When an operation on a given quotient ring is
implemented from the initial ring, you expect it to not depend on the
representative you used... but
> {{{
> sage: R = Integers(6)
> sage: R(binomial(5,2))
> 4
> sage: R(binomial(5+6,2))
> 1
> }}}
> Note that it would have been fine on quotients in which `2!` is
invertible.
Of course, you are right. Never mind what I said about this.
--
Ticket URL: <http://trac.sagemath.org/ticket/17852#comment:81>
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