Composition of binary relations is defined at https://en.wikipedia.org/wiki/Composition_of_relations
It seems that Sage does not provide a function to compose two finite binary relations. Please add it. Also note that posets (and other) are special cases of binary relations. So please make Poset (and other relevant classes describing a binary relation) a subclass of new class BinaryRelation. Agree? (I am a very new Sage user and may be wrong.) -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
