Edge coloring complete uniform hypergraphs with many components

نویسندگان

  • Yair Caro
  • Raphael Yuster
چکیده

Let H be a hypergraph. For a k-edge coloring c : E(H) → {1, . . . , k} let f(H, c) be the number of components in the subhypergraph induced by the color class with the least number of components. Let fk(H) be the maximum possible value of f(H, c) ranging over all k-edge colorings of H . If H is the complete graph Kn then, trivially, f1(Kn) = f2(Kn) = 1. In this paper we prove that for n ≥ 6, f3(Kn) = ⌊n/6⌋+1 and supply close upper and lower bounds for fk(Kn) in case k ≥ 4. Several results concerning the value of fk(Kr n), where K n is the complete r-uniform hypergraph on n vertices, are also established.

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عنوان ژورنال:
  • J. Comb. Theory, Ser. B

دوره 91  شماره 

صفحات  -

تاریخ انتشار 2004