Titlebook: Erd?s Centennial; László Lovász,Imre Z. Ruzsa,Vera T. Sós Book 2013 Springer-Verlag Berlin Heidelberg 2013 combinatorics.number theory.pro

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Euclidean vs. Graph Metric,rgence we look at a large neighborhood around a random uniformly chosen vertex in a graph and in global convergence we observe the whole graph from afar. In this note rather than surveying the general theory we will consider some concrete examples and problems of global and local convergence, with a

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Around the Sum-product Phenomenon,ed a master in recognizing seemingly elementary questions which require new insights, often with far reaching consequences. The results discussed below originate from his papers “Problems and results in combinatorial number theory, III” ([32]), “On sums and products of integers”, ([33]), jointly wit

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