#14543: Implement compositional inverses of cycle index series
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Reporter: agd | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.11
Component: combinatorics | Resolution:
Keywords: species, cycle indices | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Changes (by agd):
* dependencies: #14542 =>
Comment:
I have uploaded a new version of the patch which moves the code to a
different part of the class, eliminating the spurious dependency on
#14542. I have also expanded and updated the documentation in two ways: by
adding an ALGORITHM block explaining the (rather clumsy) method which is
used here, and by adding a SEEALSO explaining the connection to
CombinatorialLogarithmSeries.
darij has suggested in discussion on #14542 that this use of {{{assert}}}
may cause problems when CycleIndexSeriesRing is based in a complicated
ring (like another LazyPowerSeriesRing). Is the best option here to add
something like an optional {{{check_input}}} option which allows the user
to suppress these assertions?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14543#comment:5>
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