#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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Changes (by jmantysalo):
* cc: chapoton (added)
Comment:
Now we have both pieces for decomposition. Next, what should be the return
type be? `modular_decomposition()` of a graph returns a tuple of tuples of
tuples etc. But is there some tree class ready for this?
"Horizontal decomposition", i.e. `connected_components()` is commutative,
but "vertical decomposition" of course is not. But I guess we don't have a
tree for this specific situation. Maybe Frédéric can comment on this.
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Ticket URL: <http://trac.sagemath.org/ticket/19215#comment:4>
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