More sets, graphs and numbers : a salute to Vera Sós and András Hajnal

Contents.- Preface.- M. Beck, X. Wang, T. Zaslavsky: A Unifying Generalization of Sperner's Theorem.- Y.F. Bilu, D. Masser: A Quick Proof of Sprindzhuk's Decomposition Theorem.- B. Bollobas, A.D. Scott: Discrepancy in Graphs and Hypergraphs.- E. Czabarka, O. Sykora, L.A. Szekely, I. Vrt'o: Biplanar Crossing Numbers I: A Survey of Results and Problems.- C. Doche, M. Mendes France: An Exercise on the Average Number of Real Zeros of Random Real Polynomials.- A. Frank: Edge-Connection of Graphs, Digraphs, and Hypergraphs.- K. Gyory: Perfect Powers in Products with Consecutive Terms from Arithmetic Progressions.- I. Juhasz, A. Szymanski: The Topological Version of Fodor's Theorem.- A. Kostochka: Color-Critical Graphs and Hypergraphs with Few Edges: A Survey.- M. Krivelevich, B. Sudakov: Pseudo-random Graphs.- J. Nesetril: Bounds and Extrema for Classes of Graphs and Finite Structures.- J. Pach, R. Radoicic, G. Toth: Relaxing Planarity for Topological Graphs.- A. Petho: Notes on CNS Polynominals and Integral Interpolation.- A. Recski, D. Szeszler: The Evolution of an Idea - Gallai's Algorithm.- A. Sarkozy: On the Number of Additive Representations of Integers.- L. Soukup: A Lifting Theorem on Forcing LCS Spaces.- A. Thomason: Extremal Functions for Graph Minors.- A Tijdeman: Periodicity and Almost-Periodicity.