#10340: Strange error in groebner_basis()
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Reporter: sbulygin | Owner: mvngu
Type: defect | Status: needs_work
Priority: major | Milestone:
Component: commutative algebra | Keywords: groebner_basis, Boolean
Polynomials
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Changes (by malb):
* cc: PolyBoRi (added)
* priority: minor => major
* status: new => needs_work
* component: cryptography => commutative algebra
* author: Stas Bulygin =>
Comment:
The error occurs because PolyBori -- when eliminating some variables from
the system -- attempts to create a ring with zero variables. This also
explains why your second system works.
I removed that check from our wrapper, but that doesn't only makes the
code fail later. Michael, should PolyBoRi support rings with zero
variables or not? In either case I think this is a bug in the upstream
code.
In the process of looking into this I noticed that the error message was
wrong. I fixed that in the attached patch.
PS: The author field is used to indicate who wrote the patch to fix the
issue.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10340#comment:1>
Sage <http://www.sagemath.org>
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