#19215: Posets: Add is_series_parallel()
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Reporter: jmantysalo | Owner:
Type: enhancement | Status: new
Priority: major | 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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Comment (by jmantysalo):
Replying to [comment:1 ncohen]:
> Do we agree that being series-parallel is not at all equivalent to being
prime in the sense of modular decomposition?
Arghs, `is_prime()` was not what I think. So maybe there is no direct
function to wrap. But anyway, if `modular_decomposition()` ends "withot
any Prime", then the corresponding poset is N-free.
Thanks for correcting.
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Ticket URL: <http://trac.sagemath.org/ticket/19215#comment:2>
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