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Spectra of transformation digraphs of a regular digraph. (English) Zbl 1207.05122

Summary: Let \(D = (V(D), A(D))\) be a digraph, \(x, y, z\) be three variables taking values \(-\) or \(+\), and \(D^{xyz}\) denote the transformation digraphs of \(D\). In this article, we determine the spectra of seven transformation digraphs of regular digraph \(D\) in terms of the spectrum of \(D\).

MSC:

05C50 Graphs and linear algebra (matrices, eigenvalues, etc.)
05C20 Directed graphs (digraphs), tournaments
05B20 Combinatorial aspects of matrices (incidence, Hadamard, etc.)
Full Text: DOI

References:

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