I similar "problem": atoms() is not implemented for the MeetSemilattice,
while it certainly makes sense there.
Op maandag 3 april 2017 23:57:44 UTC+2 schreef Robin van der veer:
>
> Hello,
>
> I wonder if there is any way to use the join or meet operations in
> arbitrary posets?
> It seems that these methods are only exposed in the classes of join- resp.
> meet semilattices.
> However, it would be very convenient if these methods were available in
> general posets somehow, and would just raise an exception if the join/meet
> does not exist.
> The problem that I'm facing now is that the posets I'm working with are
> not join semilattices, but it is essential for me to compute joins of
> certain subsets anyway (these join do exist).
> Since the join semilattice constructor verifies that the poset is actually
> a join semilattice (and from what I see this validation cannot be
> disabled), I cannot construct my posets as join semilattices and use the
> join method.
> Any suggestions on how to go about it? Or is the only solution to just
> implement a join operation myself?
>
> Thanks
>
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