#10578: Coercion problem for vectors from polynomial rings over GF(2)
------------------------------+---------------------------------------------
Reporter: jonhanke | Owner: jason, was
Type: defect | Status: needs_info
Priority: minor | Milestone: sage-4.6.1
Component: linear algebra | Keywords: GF(2), coerce, polynomial ring,
vector
Author: Jonathan Hanke | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Comment(by wjp):
Similarly,
{{{
sage: R.<x> = GF(2)[]
sage: x // 2r
}}}
and
{{{
sage: R.<x> = GF(2)[]
sage: x.quo_rem(2r)
}}}
both crash, and things like {{{gcd(x,2)}}} give {{{TypeErrors}}} instead
of trying to coerce.
It looks like adding {...@coerce_binop}}} to a lot of methods in
{{{Polynomial_template}}} ({{{__mod__, __floordiv__, quo_rem, gcd...}}})
might work, but for {{{x // 2r}}} and {{{x % 2r}}} that doesn't help,
while strangely {{{x.__mod__(2r)}}} and {{{x.__floordiv__(2r)}}} don't
crash anymore.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10578#comment:5>
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