Ngày tải lên :
07/08/2014, 06:23
... every ei is an r-subset of V For every i = 1, , k and j = 1, , |E|, assign wi,j the list L(wi,j ) = ej Assume that G has a coloring f from the lists Note that no color v is present on every ... The first extension of Theorem is the following Theorem For every r ≥ and k ≥ 2, p(r, k) ≤ N(k, r) ≤ k p(r, k) It follows from Alon s results in [1] that for some c2 > c1 > and every r ≥ and k ... hypergraphs and some o a related questions, In Infinite and Finite Sets, A Hajnal et al., editors, Colloq Math Soc J Bolyai, 11, North Holland, Amsterdam, 609–627, 1975 [6] P Erd s, A.L Rubin and H...