#13202: conversion problems in BooleanPolynomialRing with degrevlex order
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Reporter: Bouillaguet | Owner: malb
Type: defect | Status: new
Priority: major | Milestone: sage-5.2
Component: commutative algebra | Resolution:
Keywords: conversion | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by AlexanderDreyer):
in `pbori.pyx`'s function `get_var_mapping`, indices are used to represent
the variables, but the reversing of the internal variable order is not
obeyed here (`PolyBoRi` does not support degrevlex directly, but a variant
with revered variable order.). I attach a quick fix for that problem, but
one can probably do better by using the the indexed reordering from the
ring (I'm not so familiar with that part of pbori.pyx).
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13202#comment:2>
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