#13250: Additional poset examples
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Reporter: csar | Owner: sage-combinat
Type: enhancement | Status: new
Priority: major | Milestone: sage-5.3
Component: combinatorics | Keywords: sd40
Work issues: | Report Upstream: N/A
Reviewers: | Authors:
Merged in: | Dependencies:
Stopgaps: |
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Various combinatorial objects already have order relations available, but
the posets themselves are not available. (An example of such a poset that
is available is SymmetricGroupWeakOrderPoset.)
Posets to add:
* set partitions ordered by refinement
* Young's lattice up to rank n
* Principal order ideal in Young's lattice
* dominance order on partitions
* poset of cells in a Young diagram
* absolute order on the symmetric group
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13250>
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