#7271: some small polybori interface fixes
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Reporter: malb | Owner: malb
Type: defect | Status: needs_review
Priority: minor | Milestone: sage-4.2
Component: commutative algebra | Keywords: polybori, crypto
Work_issues: | Author: Martin Albrecht
Reviewer: | Merged:
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Comment(by malb):
Hi Mike, sorry for being so brief earlier, I was in a rush.
PolyBoRi calls this function from various functions which are called by
the {{{groebner_basis}}} function. The ones I could find quickly are:
{{{
polybori-0.6/pyroot/polybori/rank.py: return
p.lex_lead().variables().next()
polybori-0.6/pyroot/polybori/ll.py: return
Monomial(v).variables().next().index()
polybori-0.6/testsuite/py/parsegat.py: return
p.lead().variables().next()
}}}
As you can see, it calls next() immediatly on the result of
{{{variables()}}}. Right now, certain GB computations will fail with an
{{{AttributeError}}} because of this.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7271#comment:5>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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