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On lattice polyhedra. III: Blockers and anti-blockers of lattice clutters. (English) Zbl 0443.05003
Polyhedral combinatorics, dedic. to the Mem. of D. R. Fulkerson, Math. Program. Study 8, 197-207 (1978).

MSC:
05A05 Permutations, words, matrices
06A15 Galois correspondences, closure operators (in relation to ordered sets)
05C20 Directed graphs (digraphs), tournaments
05C38 Paths and cycles