#14906: Implement method to expand cycle index series as symmetric function in
variables
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Reporter: agd | Owner: agd
Type: enhancement | Status: positive_review
Priority: minor | Milestone: sage-5.12
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: Andrew Gainer-Dewar | Reviewers: Mathieu Guay-
Report Upstream: N/A | Paquet
Branch: u/agd/cis_expand_as_sf | Work issues:
Stopgaps: | Dependencies:
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Changes (by mguaypaq):
* status: needs_review => positive_review
* reviewer: mguaypaq => Mathieu Guay-Paquet
* work_issues: fix the commit message =>
Comment:
I checked that the output of this function on a few examples agrees with
the data from Table 4.1 (Cycle index series of particular species) from
Bergeron, Labelle and Leroux's book "Combinatorial Species and Tree-Like
Structures", so I believe that it's mathematically correct.
Also, the commit message issue is now fixed.
The only potential problem is the patchbot's startup_time plugin which
failed in the latest round of testing. However, the patch only adds a
small method to an existing class, so I can't believe that it would really
cause a speed regression.
Positive review!
--
Ticket URL: <http://trac.sagemath.org/ticket/14906#comment:6>
Sage <http://www.sagemath.org>
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