2001Journal of Graph TheoryRequires access

The symmetric (2k, k)-graphs

Matthias Kriesell

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Abstract

A noncomplete graph G is called an (n, k)-graph if it is n-connected and G − X is not (n − |X| + 1)-connected for any X ⊆ V(G) with |X| ≤ k. Mader conjectured that for k ≥ 3 the graph K2k + 2 − (1-factor) is the unique (2k, k)-graph. We settle this conjecture for strongly regular graphs, for edge transitive graphs, and for vertex transitive graphs. © 2000 John Wiley & Sons, Inc. J Graph Theory 36: 35–51, 2001

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A noncomplete graph G is called an (n, k)-graph if it is n-connected and G − X is not (n − |X| + 1)-connected for any X ⊆ V(G) with |X| ≤ k. Mader conjectured that for k ≥ 3 the graph K2k + 2 − (1-factor) is the unique (2k, k)-graph. We settle this conjecture for strongly regular graphs, for edge transitive graphs, and for vertex transitive graphs. © 2000 John Wiley & Sons, Inc. J Graph Theory 36: 35–51, 2001

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Available abstract

A noncomplete graph G is called an (n, k)-graph if it is n-connected and G − X is not (n − |X| + 1)-connected for any X ⊆ V(G) with |X| ≤ k. Mader conjectured that for k ≥ 3 the graph K2k + 2 − (1-factor) is the unique (2k, k)-graph. We settle this conjecture for strongly regular graphs, for edge transitive graphs, and for vertex transitive graphs. © 2000 John Wiley & Sons, Inc. J Graph Theory 36: 35–51, 2001

Key concepts: Combinatorics, Mathematics, Symmetric graph, Vertex-transitive graph, Discrete mathematics, Cograph, Transitive relation, 1-planar graph

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