Switching of edges in strongly regular graphs. I: A family of partial difference sets on 100 vertices.
Jørgensen, L.K., Klin, M. (2003)
The Electronic Journal of Combinatorics [electronic only]
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Jørgensen, L.K., Klin, M. (2003)
The Electronic Journal of Combinatorics [electronic only]
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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).
J. Płonka (1982)
Colloquium Mathematicae
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Betten, Anton, Betten, Dieter (1997)
Beiträge zur Algebra und Geometrie
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Meenakshi, A.R., Anbalagan, S. (2010)
International Journal of Mathematics and Mathematical Sciences
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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 (7 distinct eigenvalues of the adjacency matrix) has the metrically regular square. The results deal with the graphs of the diameter see [7] and [8].
D. V. Thampuran (1970)
Matematički Vesnik
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