#14229: Remove vacuous solutions from solve
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Reporter: ppurka | Owner: burcin
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.8
Component: symbolics | Keywords:
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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Sometimes solve and its variants tend to report vacuous solutions. A
recent one from [http://ask.sagemath.org/question/2324/how-to-print-out-
maxima-commands-being-used-by ask.sagemath] is the following:
{{{
sage: x,y = var('x,y')
sage: solve([x^2*y^2 <= x^2*y, x^2*y^2 > x^2*y],[x,y])
[[x == 0, 1 < y, 0 != 0], [x == 0, y < 0, 0 != 0]]
}}}
Shouldn't we remove these meaningless solutions?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14229>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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