#19191: LatticePoset: add is_planar()
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Reporter: jmantysalo | Owner:
Type: enhancement | Status: needs_info
Priority: major | Milestone: sage-6.9
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: Jori Mäntysalo | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jmantysalo/latticeposet__add_is_planar__|
da6a1f9536ac362eef45f565515c752afdf9c84f
Dependencies: #19193 | Stopgaps:
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Comment (by ncohen):
> Googling "upward planar lattice" seems to found nothing. I guess it is
good reason to have `is_planar()`, as it seems to be only used term.
Okay, done at u/ncohen/19191. Note that I rewrote history.
> (In the future we should not have problems like this. Just wait until
!SageMath is The Software and all questions about "what is exact
definition of...?" will be answered "Sage defines...". `;=)`)
Yeah. Well if that's the case then I will regret even more this
`Poset.is_planar`. At least I will have this trac tickets to use for my
own defense `:-P`
Nathann
--
Ticket URL: <http://trac.sagemath.org/ticket/19191#comment:29>
Sage <http://www.sagemath.org>
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