#13240: Give posets polynomials (order, characteristic, zeta, etc.)
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Reporter: csar | Owner: sage-combinat
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-5.12
Component: combinatorics | Resolution:
Keywords: sd40, days45 | Merged in:
Authors: Alex Csar, Kevin Dilks | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Comment (by ncohen):
Helooooooo !
There still isn't any definition of what `f_polynomial` and `h_polynomial`
return. Also, I personally do not think that a function named "chains with
bounds" should exist (and so I will let somebody else give a positive
review to this ticket), but in any case if you want to implement such a
thing I'd think better to do it the following way :
* create a copy of the poset without the top/bottom element
* list its chains
* return each of them after adding the top and bottom element at each end
of the chain.
Nathann
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Ticket URL: <http://trac.sagemath.org/ticket/13240#comment:27>
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