Abstract

Gyori and Lovasz independently proved the following beautiful theorem. Let k≥2k\ge2 be an integer, let GG be a kk-connected graph on nn vertices, let v1,v2,…,vkv_1,v_2,\ldots,v_k be distinct vertices of GG and let n1,n2,…,nkn_1,n_2,\ldots,n_k be positive integers with n1+n2+⋯+nk=nn_1+n_2+\cdots+n_k=n. Then GG has disjoint connected subgraphs G1,G2,…,GkG_1,G_2,\ldots,G_k such that for i=1,2,…,ki=1,2,\ldots,k the graph GiG_i has nin_i vertices and vi∈V(Gi)v_i\in V(G_i). We give a self-contained exposition of Gyori's proof.

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