#11530: Conversion of finite field elements to PARI disregards characteristic
and
mangles "Mod"
------------------------------+---------------------------------------------
Reporter: rbeezer | Owner: AlexGhitza
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.7.1
Component: algebra | Keywords: _pari_init_, variable name,
finite field
Work_issues: | Upstream: N/A
Reviewer: Jeroen Demeyer | Author: Simon King, Rob Beezer
Merged: | Dependencies:
------------------------------+---------------------------------------------
Changes (by jdemeyer):
* status: needs_review => needs_work
Comment:
Replying to [comment:15 rbeezer]:
> Good idea, Jeroen. {{{self.polynomial()._pari_with_name(var)}}} hits
the coefficients of an element with a {{{Mod}}}, so the behavior changes.
Wow, nice catch!
The current behaviour is totally wrong, the coefficients '''must''' be hit
by a `Mod`, otherwise we can get wrong results! I remember fixing another
instance of this bug (#10486).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11530#comment:16>
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