Hi there, > > I just created a poset using the new category. It seems to work except for > > > > sage: TestSuite(poset).run() > > [...] > > AssertionError: Not implemented method: antichains > > ------------------------------------------------------------ > > The following tests failed: _test_not_implemented_methods > > > > Do we really want to have antichain a mandatory abstract method ? > > I agree with Christian; did you try with the latest version of the patch?
Everything seem ok now ! Cool ! Thanks a lot for it ! > > Also, the poset in question is the poset of Dyck words ordered by height of > > the path. That is dw1 is smaller than dw2 if the path associated to dw1 is > > always below the path associated to dw2. Do we want this to be the default > > ordering for dyck words ? If not, I'm looking for a good name for this > > poset. With my current patch it is accessible by > > > > sage: poset = DyckWords().HeightPoset() > > sage: poset.le(DyckWord([]), DyckWord([])) > > True > > sage: poset.le(DyckWord([1,0]), DyckWord([1,0])) > > True > > sage: poset.le(DyckWord([1,0,1,0]), DyckWord([1,1,0,0])) > > True > > sage: poset.le(DyckWord([1,1,0,0]), DyckWord([1,0,1,0])) > > False > > > > Any better suggestion is mostly welcome. > > sage: poset = DyckWords().containment_poset() ? Any suggestion ? Florent -- 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.
