#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):
Replying to [comment:23 ncohen]:
> > There is of course ways to remove duplikates from a list. However, I
guess it is not possible (in reality) with iterators. Hence we must
abandon `isomorphic_subposets_iterator` and left only
`isomorphic_subposets`.
>
> It is not because you have no use for this information that you should
filter them out before giving them to the users, especially when you spent
time to compute them. At the very least you could add an option to remove
them.
I don't get it. If I leave duplicates, then user will have REAL
duplicates, that have no difference at all. Function called
`isomorphic_subposets` should return posets.
--
Ticket URL: <http://trac.sagemath.org/ticket/16892#comment:24>
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