(At the super market) Doesn't it work better if you also do induced=true for the transitive closure thing too ?
Nathann On Wednesday, August 27, 2014, Jori Mantysalo <jori.mantys...@uta.fi> wrote: > On Fri, 22 Aug 2014, Nathann Cohen wrote: > > Does Sage has a function to check if poset A contains a subposet >>> isomorphic to subposet B? >>> >> > Not... exactly. There is no Poset method that does that, but there is a >> DiGraph method that does that. But then, it depends on what you call a >> subposet of a poset. >> > > It seems that neither definition is not what I was thinking. In principle > the function I want could be done with something like > > def has_isomorphic_subposet(A, B): > for x in Subsets(A.list()): > if A.subposet(x).is_isomorphic(B): > return True > return False > > which is of course extremely slow. > > In this definition i.e. lattice N_5 contains 4-element "diamond lattice". > > -- > Jori Mäntysalo > > -- > You received this message because you are subscribed to a topic in the > Google Groups "sage-devel" group. > To unsubscribe from this topic, visit https://groups.google.com/d/ > topic/sage-devel/0kqw7HPV088/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > sage-devel+unsubscr...@googlegroups.com. > To post to this group, send email to sage-devel@googlegroups.com. > Visit this group at http://groups.google.com/group/sage-devel. > For more options, visit https://groups.google.com/d/optout. > -- 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 sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
