#2516: generalized hypergeometric functions should be implemented
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Reporter: ddrake | Owner: cwitty
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-6.2
Component: symbolics | Resolution:
Keywords: hypergeometric | Merged in:
Authors: Fredrik | Reviewers: Ralf Stephan
Johansson, Eviatar Bach, Ralf | Work issues:
Stephan | Commit:
Report Upstream: N/A | ebe4c6a12c88cf6fdf0e7eb7b43bcfe05dcab8a4
Branch: | Stopgaps:
u/rws/generalized_hypergeometric_functions_should_be_implemented|
Dependencies: |
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Comment (by nbruin):
Replying to [comment:37 rws]:
> Replying to [comment:36 nbruin]:
> > One shouldn't touch the `__name__` attribute, and certainly not during
arbitrary executing code!
> Do you have a reference for that?
Well, you can look it up. Python uses `__name__` for any "named" object
(e.g., defined by a `def` or a `class` or modules). These things aren't
supposed to change (they are used for introspection). The fact that it
does (and that that matters!) points to either a flaw in the category
system or in the way it is used here.
> It is a consequence of `hypergeometric` being a SE with tuples as
parameter. In the`Expression` constructor the class gets changed using
`dynamic_class()` and this appears to be responsible.
> Overall, all long tests pass and I see no reason to hold this old ticket
any longer.
The issues around `sr_to_max` should be fixed (and that's
straightforward).
--
Ticket URL: <http://trac.sagemath.org/ticket/2516#comment:39>
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