#9634: binomial does not accept variable when only in the lower argument
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Reporter: Henryk.Trappmann | Owner: burcin
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.6.1
Component: symbolics | Keywords:
Author: Burcin Erocal | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Changes (by newvalueoldvalue):
* status: new => needs_work
* milestone: => sage-4.6.1
* author: => Burcin Erocal
Comment:
attachment:trac_9634-symbolic_binomial.patch replaces the top level
`binomial()` function with the one defined in `sage.functions.other`. This
version can handle symbolic input, as opposed to the previous one from
`sage.rings.arith`.
This still needs work, since the files `sage/functions/other.py` and
`sage/rings/arith.py` don't pass doctests yet. We need to improve the
speed of numerical approximation using the `gamma` trick from
`sage.rings.arith.binomial` and change `sage.symbolic.pynac.py_binomial()`
to handle large integers.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9634#comment:2>
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