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Boussaïri, Abderrahim; Souktani, Imane; Zouagui, Mohamed
Linear algebra and its applications, 08/2024, Letnik: 695Journal Article
In this paper, we give a characterization of regular two-graphs of order n in terms of spectral data of two-graphs of order n−1 and n−2. Moreover, we prove that a two-graph of order n is regular if and only if all its induced sub-two-graphs with n−2 vertices have the same characteristic polynomial.
