#16697: implement symbolic lower incomplete gamma function
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Reporter: rws | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.3
Component: symbolics | Resolution:
Keywords: gamma, | Merged in:
incomplete, special, functions | Reviewers:
Authors: | Work issues:
Report Upstream: N/A | Commit:
Branch: | d8d7ee29d7d0f8cf9f884c4403fe5c36cdf3336d
u/rws/implement_symbolic_lower_incomplete_gamma_function| Stopgaps:
Dependencies: |
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Comment (by nbruin):
Replying to [comment:12 rws]:
> Does the same with the patch. Maybe include the fix here? Is it simple?
Might not be too bad. I think the problem is in
[http://git.sagemath.org/sage.git/tree/src/sage/symbolic/expression_conversions.py#n515
sage.symbolic.expression_conversions.InterfaceInit.derivative (line 515 or
so)]. You can see there that the string representation of a derivative
expression gets assembled by using `f.name()`. Replacing that by
`f._maxima_init_()` might already do a better job:
{{{
sage: gamma(x,y).operator().name()
'gamma'
sage: gamma(x).operator().name()
'gamma'
sage: gamma(x,y).operator()._maxima_init_()
'gamma_incomplete'
sage: gamma(x).operator()._maxima_init_()
'gamma'
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/16697#comment:13>
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