#19296: Generating function in FindStat interface
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Reporter: stumpc5 | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-6.9
Component: packages: | Resolution:
optional | Merged in:
Keywords: FindStat, OEIS | Reviewers:
Authors: Christian Stump | Work issues: document
Report Upstream: N/A | Commit:
Branch: | 5558be983f10469e5be31e45652364437a0edb03
u/stumpc5/generating_function_in_findstat_interface| Stopgaps:
Dependencies: #19307 |
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Comment (by stumpc5):
The generating function is well-defined for any integer valued statistic
(though it may be a Laurent polynomial). If I want to search the OEIS for
the generating function of a statistic, I have to turn the generating
function into a sequence, or indeed a linearized table T(n,k) where T(n,k)
is the coefficient of {{{q^k}}} in the generating function of the n-th
piece of the statistic (say the permutations of n or the Dyck paths of
semilength n,...).
But since k \geq 0, this does not work for Laurent polynomials.
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Ticket URL: <http://trac.sagemath.org/ticket/19296#comment:34>
Sage <http://www.sagemath.org>
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