Bhat, M. A.; Naikoo, T. A.; Pirzada, S.
(ДЗ "ЛНУ імені Тараса Шевченка", 2019)
The set of distinct eigenvalues of a signed digraph S together with their respective multiplicities is called its spectrum. Two signed digraphs of same order are said to be cospectral if they have the same spectrum. In ...