#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, simplify_factorial, maxima | Work
issues:
Report Upstream: N/A |
Reviewers:
Authors: |
Merged in:
Dependencies: |
Stopgaps:
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Comment (by JoalHeagney):
I don't argue with using gamma to __'''extend'''__ factorial - just find
it worrying that maxima treats factorial as __'''equivalent'''__ to gamma.
Much the same way sage doesn't treat ZZ as identically equivalent to RR,
despite the fact that every element of ZZ appears in RR.
I'm finishing moving house for the next few days (2000km by car), and
won't have reliable Internet for about a month after, so I am unable to
code anything up, but I would much prefer that if we/maxima are going to
treat factorial = gamma, to replace simplify_factorial with simplify_gamma
instead?
Out of curiosity, does anyone know how we would do the maxima
gamma_!expand:true; function call from sage/python?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13869#comment:11>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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