ON PARTITION THEOREMS FOR FINITE GRAPHS

ON PARTITION THEOREMS FOR FINITE GRAPHS
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发表时间:
1973
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通讯作者:
P. E. -. R. L. Graham
P. E. -. R. L. Graham
中科院分区:
其他
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作者:
P. E. -. R. L. Graham

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对于给定的有限图G和正整数k,设r(G ; k)表示最小整数r,使得如果r个顶点上的完全图Kr的边被任意划分为k个类,则某类包含与G同构的子图. r(G ; k)的存在性立即从著名的定理R amsey {8]得出,该定理断言r(Kn ; k)<对于所有n和k。在本文中,我们研究了r(G ; k)的行为,大k作为G的范围在各种类型的图。
For a given finite graph G and positive integer k, let r(G ; k) denote the least integer r such that if the edges of Kr , the complete graph on r vertices, are arbitrarily partitioned into k classes then some class contains a subgraph isomorphic to G . The existence of r(G ; k) follows at once from the well-known theorem of R a m s e y {8] which asserts that r(Kn ; k) < for all n and k . In this paper we investigate the behavior of r(G ; k) for large k as G ranges over various classes of graphs .