#5125: [with patch, needs review] Ideal.basis_is_groebner() may return wrong
results
---------------------------------+------------------------------------------
Reporter: malb | Owner: malb
Type: defect | Status: new
Priority: critical | Milestone: sage-3.3
Component: commutative algebra | Resolution:
Keywords: |
---------------------------------+------------------------------------------
Changes (by john_perry):
* summary: Ideal.basis_is_groebner() may return wrong results => [with
patch, needs review] Ideal.basis_is_groebner()
may return wrong results
Comment:
There were two subtle bugs.
* The first was that {{{M}}} only had one row. Thus, {{{i}}} would check
only the first element of {{{M}}}. Hence unpredictable behavior: sometimes
the correct answer, sometimes not.
* The second was that Singular (for whatever reason) expects the arrays
to be indexed by {{{[row,col]}}} and not by {{{[row][col]}}}.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5125#comment:2>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"sage-trac" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/sage-trac?hl=en
-~----------~----~----~----~------~----~------~--~---
