#16892: Function to check if a poset containt a subposet isomorphic to another
poset
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Reporter: jmantysalo | Owner:
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-wishlist
Component: combinatorics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
u/jmantysalo/function_to_check_if_a_poset_containt_a_subposet_isomorphic_to_another_poset|
f13f2385d2b79adad5dae8282162d776bb8114bd
Dependencies: 16909 | Stopgaps:
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Comment (by jmantysalo):
OK, so we have same view on default behaviour. Good. And so it is possible
to make this function first and expand it later.
But I'll also check if I can make a function to get subposets. This seems
to work:
{{{
def isomorphic_subposets(A, B):
return [A.subposet(x) for x in
A.hasse_diagram().transitive_closure().subgraph_search_iterator(B.hasse_diagram().transitive_closure(),
induced=True)]
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/16892#comment:15>
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