Hi! I just noticed that we have
sage: W = WeylGroup(["A",3,1]) sage: w = W.an_element() sage: w.bruhat_lower_covers but not sage: w.bruhat_upper_covers Is there a reason for this? Both methods do exist for weak order. Using the revised poset code that some of you are working on, is it now possible to get upper covers for infinite posets? Best, Anne -- You received this message because you are subscribed to the Google Groups "sage-combinat-devel" group. To post to this group, send email to sage-combinat-devel@googlegroups.com. To unsubscribe from this group, send email to sage-combinat-devel+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sage-combinat-devel?hl=en.
