More Sets, Graphs and Numbers: A Salute to Vera Sòs and ...
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A Salute to Vera Sòs and András Hajnal Ervin Gyori, Gyula O.H. Katona, László Lovász. Theorem 1.2 (Tutte). A graph contains k edge-disjoint spanning trees if and only if, for every partition {V1, . . . , Vt} of V, the number of edges connecting ...