#19659: Poset: inverse function of ordinal_sum()
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Reporter: jmantysalo | Owner:
Type: enhancement | Status: needs_review
Priority: major | Milestone: sage-7.0
Component: combinatorics | Resolution:
Keywords: poset | Merged in:
Authors: Jori Mäntysalo | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jmantysalo/develop | dc6ea77deba193bdf03e55ecf66a1ea1f7d3e90c
Dependencies: | Stopgaps:
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Comment (by chapoton):
I would suggest 'is_ordinal_sum', with boolean output, with a certificate
option to see
a decomposition.
Another possibility would be 'ordinal_sum_decomposition'.
'ordinal_components' is ambiguous because there exists also 'ordinal
product' (not yet in sage maybe), besides ordinal sum.
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Ticket URL: <http://trac.sagemath.org/ticket/19659#comment:46>
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