Hi!
On 6 Jun., 05:45, Robert Dodier <[email protected]> wrote:
> CVS log claims this bug was fixed recently (between 5.17 & 5.18).
> Here's what I get with Maxima from CVS (5.18+).
>
> ...
Very good! So, ticket #6228 can be closed when the new maxima version
is in Sage.
But I think we should now come back to the original poster's question:
- Can Sage provide the multiplicities for the solutions of a *set* of
nonlinear equations?
Can it?
At least, "multiplicities=True" seems to have no effect in "solve":
sage: solve((x^2-1)^3==0, x, multiplicities=True)
([x == -1, x == 1], [3, 3])
sage: solve(((x^2-1)^3==0,(x^2-1)^3==0), x, multiplicities=True)
[[x == 1], [x == -1]]
This time, it is all Sage's fault, because maxima gives the right
answer:
sage: maxima.eval('solve(((z^2-1)^3,(z^2-1)^3),z)')
'[z=-1,z=1]'
sage: maxima.eval('multiplicities')
'[3,3]'
Hence, it is not the same as ticket #6228.
Therefore I opened a new one, namely
http://trac.sagemath.org/sage_trac/ticket/6231
Cheers,
Simon
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