#14496: unify the three implementations of gaussian q-binomial coefficients
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Reporter: chapoton | Owner: tbd
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-5.10
Component: combinatorics | Resolution:
Keywords: gaussian binomial | Work issues:
Report Upstream: N/A | Reviewers: Francis Clarke, Travis
Scrimshaw
Authors: Frédéric Chapoton | Merged in:
Dependencies: | Stopgaps:
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Changes (by fwclarke):
* status: needs_review => needs_work
Comment:
I was about to say positive review, when I noticed two things:
1. `gaussian_polynomial(5, 2, 7r)` fails. But this caused by a feature
of `cyclotomic_value`, so should probably be ignored.
2. `gaussian_binomial(4, 2, Zmod(6)(2), algorithm='naive')` fails. This
can be very simply rectified by excepting a `ZeroDivisionError` as well as
a `TypeError` just before the "last attempt".
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14496#comment:21>
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