The aim of Discrete Mathematics is to bring together research papers in different parts of discrete mathematics.Contributions presented to the journal can be research papers, short notes, communications, occasional survey articles, and research problems. The 'Communications' section is devoted to the fastest possible publication of the brief outlines of recent research results.Discrete Mathematics also publishes a limited number of book announcements, as well as proceedings of conferences. The journal presents papers in combinatorical mathematics and related areas. The fields covered by DM include in particular: graph and hypergraph theory, network theory, coding theory, block designs, lattice theory, the theory of partially ordered sets, combinatorial geometries, matroid theory, extremal set theory, logic and automata, matrices, polyhedra, and discrete probability theory.