#14734: Map from Graphs to Partitions
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Reporter: chrisjamesberg | Owner: sage-combinat
Type: enhancement | Status: closed
Priority: major | Milestone: sage-5.11
Component: combinatorics | Resolution: fixed
Keywords: FindStatDays01 | Work issues:
Report Upstream: N/A | Reviewers: Travis Scrimshaw
Authors: Chris Berg | Merged in: sage-5.11.beta2
Dependencies: | Stopgaps:
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Comment (by stumpc5):
I do not agree that the combinatorial_map decorator doesn't have anything
to do with Sage. It organizes mathematical concepts by providing the
possibility to ask for things like:
- which involutions are there on permutations
- which bijections between 132-avoiding permutations and Dyck paths are
there,
and so on. The decorator should even be able to carry information about
the maps (though this is not yet there), like "injective", "surjective",
"bijective", ... And these mathematical information are interesting and
useful for Sage users!
Feel free to start a discussion about the decorators on the sage-combinat
mailing list, or to ask for a poll if the community wants such decorators
or not. I will at least copy your comment and my answer there in order to
get a discussion started.
Obviously, the decorator might have downsides. E.g., we have seen that it
not yet works well together with the cached_method decorator.
I will add some further points once we have a discussion started at sage-
combinat-devel.
Cheers, Christian
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14734#comment:6>
Sage <http://www.sagemath.org>
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