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 > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.