Displaying similar documents to “New regular partial difference sets and strongly regular graphs with parameters ( 96 , 20 , 4 , 4 ) and ( 96 , 19 , 2 , 4 ) .”

Metrically regular square of metrically regular bigraphs. II.

Vladimír Vetchý (1992)

Archivum Mathematicum

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Metrically regular bigraphs the square of which are metrically regular graphs are investigated in the case of graphs with 6 distinct eigenvalues (these eigenvalues can have variuos multiplicities).

Metrically regular square of metrically regular bipartite graphs of diameter D = 6

Vladimír Vetchý (1993)

Archivum Mathematicum

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The present paper deals with the spectra of powers of metrically regular graphs. We prove that there is only one table of the parameters of an association scheme so that the corresponding metrically regular bipartite graph of diameter D = 6 (7 distinct eigenvalues of the adjacency matrix) has the metrically regular square. The results deal with the graphs of the diameter D < 6 see [7] and [8].