Hypergraph Seminar : Ohio State University, 1972

Isomorphism problems for hypergraphs.- Nombres de coloration de l'hypergraphe h-parti complet.- The coloring numbers of the direct product of two hypergraphs.- Graphe representatif de l'hypergraphe h-parti complet.- The chromatic index of an infinite complete hypergraph: A partition theorem.- Intersecting families of edges in hypergraphs having the hereditary property.- On theorems of berge and fournier.- Extremal problems on graphs and hypergraphs.- Hypergraph reconstruction.- Une condition pour qu'un hypergraphe, ou son complementaire, soit fortement isomorphe a un hypergraphe complet.- On a property of hypergraphs with no cycles of length greater than two.- Sur les hypergraphes bichromatiques.- Minimax theorems for hypergraphs.- Quelques problemes concernant les cliques des hypergraphes h-complets et q-parti h-complets.- Reconstruction theorems for infinite hypergraphs.- Note on a hypergraph extremal problem.- Sur une conjecture de V.

Chvatal.- On the chromatic number of the direct product of hypergraphs.- Every directed graph has a semi-kernel.- Elementary strong maps and transversal geometries.- Some problems in graph theory.- Aspects of the theory of hypermatroids.- Facets of I-matching polyhedra.- Chromials.- Some partitions of all triples into steiner triple systems.- Unsolved problems.