Copoints in antimatroids. (English) Zbl 0463.05005
Combinatorics, graph theory and computing, Proc. 11th southeast. Conf., Boca Raton/Florida 1980, Vol. II, Congr. Numerantium 29, 535-544 (1980).
MSC:
| 05A15 | Exact enumeration problems, generating functions |
| 05C05 | Trees |
| 06A12 | Semilattices |
| 03E05 | Other combinatorial set theory |
| 05A05 | Permutations, words, matrices |
| 52A20 | Convex sets in \(n\) dimensions (including convex hypersurfaces) |
