#6228: Wrong multiplicities when solving a univariate polynomial equation
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Reporter: SimonKing | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-4.0.2
Component: symbolics | Keywords: multiplicities solve
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At http://groups.google.com/group/sage-
support/browse_thread/thread/d8e22deb18d97253 Michael Friedman asked how
to get the multiplicities when solving a set of nonlinear equations.
It turns out that actually even the multiplicities for a single and rather
simple equation are wrong:
{{{
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| Sage Version 4.0, Release Date: 2009-05-29 |
| Type notebook() for the GUI, and license() for information. |
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sage: z = var('z')
sage: solve((z^3-1)^3,z,multiplicities=True)
([z == (sqrt(3)*I - 1)/2, z == (-sqrt(3)*I - 1)/2, z == 1], [1, 1, 3])
}}}
I am afraid that symbolics isn't my field of expertise. So, I don't know
how to cure it.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6228>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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