#11934: Symbolic simplification error
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Reporter: mjo | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-4.7.3
Component: symbolics | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by mjo):
Replying to [comment:1 kcrisman]:
> Can you be more specific about the invalidity?
This seems to be the root of the problem. My function is real, the
simplification is not:
{{{
sage: n(f(x=-0.5))
0.0175781250000000
sage: n(f.full_simplify()(x=-0.5))
0.0175781250000000 - 1.27567374911183e-18*I
}}}
I realize that the imaginary part is basically zero, but one of the
simplifications has overstepped its bounds somewhere in that the
expression is verifiably different pre- and post-simplification.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11934#comment:3>
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