Chapel Hill Poset Atlas
This site contains lists of the following kinds of posets with up to m elements:
- m=9: Unlabeled posets, connected posets, and posets with unique maximal elements.
- m=9: Connected hook length posets and indecomposable disconnected hook length posets.
- m=9: Connected d-complete and connected jeu de taquin posets.
- m=7: Naturally labeled posets and hook length posets.
The following data is listed for posets with up to 7 elements: inverse order extensions, isomorphisms from natural labellings to standard forms, and name lookups for standard forms.