#7425: I.variety() doesn't check that I is zero-dimensional
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Reporter: AlexGhitza | Owner: malb
Type: defect | Status: new
Priority: major | Milestone: sage-4.2.1
Component: commutative algebra | Keywords:
Work_issues: | Author:
Reviewer: | Merged:
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{{{I.variety()}}} should first check whether the ideal I is indeed
0-dimensional and refuse to continue otherwise. This should be a fairly
trivial fix. Right now the following seems to run forever:
{{{
----------------------------------------------------------------------
| Sage Version 4.2, Release Date: 2009-10-24 |
| Type notebook() for the GUI, and license() for information. |
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sage: R.<x, y, z> = QQ[]
sage: I = R.ideal([x^2-y^3*z, x+y*z])
sage: I.dimension()
1
sage: I.variety()
verbose 0 (1808: multi_polynomial_ideal.py, variety) Warning: falling back
to very slow toy implementation.
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7425>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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