#19323: Metaticket: Enhancements for posets and lattices
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Reporter: jmantysalo | Owner:
Type: enhancement | Status: new
Priority: trivial | Milestone: sage-wishlist
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by jmantysalo):
* milestone: sage-6.9 => sage-wishlist
Old description:
> This is metaticket to be a place for random things to add for finite
> posets and lattices.
>
> - From #18941: Add possibility to check if a list is a ''saturated''
> chain of a poset.
> - Add `is_eulerian()`.
> - Add a function to generate random lattice.
> - Add "standar example" (poset of `2n` elements with dimension `n` to
> poset catalog.
> - Add divisor lattice to poset catalog.
New description:
This is metaticket to be a place for random things to add for finite
posets and lattices.
'''New functions'''
- From #18941: Add possibility to check if a list is a ''saturated'' chain
of a poset.
- Add `is_eulerian()`.
- Add a function to generate random lattice.
'''Poset catalog'''
- Add "standar example" (poset of `2n` elements with dimension `n`).
- Add divisor lattice.
'''Other'''
- Think about `ceritificate`-options. Should for example
`is_meet_semilattice()` return a pair of elements without a meet?
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Ticket URL: <http://trac.sagemath.org/ticket/19323#comment:1>
Sage <http://www.sagemath.org>
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