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A graph G is called an (n, k)-graph if k(G - S) = n - |S| for any S V(G) with |S| ≤ k, where k.(G) denotes the connectivity of G. Mader conjectured that for k ≥ 3 the graph K2k+2 - (1-factor) is the unique (2k, k)-graph. Kriesell has settled two special cases for k = 3, 4. We prove the conjecture for the general case k ≥ 5. 相似文献
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