'Dividesgcd h' diaporamas de présentation

R a i n b o w Decompositions

R a i n b o w Decompositions. University of Haifa. Raphael Yuster. Proc. Amer. Math. Soc. (2008), to appear. A Steiner system S (2, k , n ) is a set X of n points, and a collection of subsets of X of size k (blocks), such that any two points of X are in exactly one of the blocks.

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