#13869: Gamma of complex numbers incorrectly simplifies to factorial
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Reporter: JoalHeagney | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-5.6
Component: symbolics | Resolution:
Keywords: gamma, simplify_full | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Changes (by burcin):
* owner: AlexGhitza => burcin
* component: algebra => symbolics
Comment:
This seems to be our doing. In `simplify_factorial()` we have:
{{{
return self.parent()(self._maxima_().makefact().factcomb().minfactorial())
}}}
Here is what the Maxima manual says about `makefact()`:
{{{
transforms occurrences of binomial,gamma, and beta functions in exp to
factorials.
}}}
There is also a corresponding `makegamma()` function, but this will change
factorials to gamma as well.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13869#comment:1>
Sage <http://www.sagemath.org>
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