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Super edge- and point-connectivities of the Cartesian product of regular graphs. (English) Zbl 1018.05056

The author proves that the Cartesian product of two regular graphs with maximum edge-connectivity (i.e., \(\lambda(G)= d(G)\)) is super edge-connected except for the case \(K_2\times K_n\), \(n\geq 2\). Here super edge-connected means \(\lambda(G)= d(G)\) and each minimum edge-disconnectivity set isolates a vertex. Using this result (and a similar one about maximum vertex-connectivity) certain classes of networks which are recursively defined by Cartesian products are shown to possess super edge-connectivity (respectively, super vertex-connectivity).
Reviewer: M.Hager (Leonberg)

MSC:

05C40 Connectivity
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