In this paper we describe two methods, both inspired from Godsil-McKay switching on simple graphs, to build cospectral gain graphs whose gain group consists of the complex numbers of modulus 1 (the circle group). The results obtained here can be also applied to the Hermitian matrix of mixed graphs.
Godsil-McKay switching for mixed and gain graphs over the circle group / Belardo, F.; Brunetti, M.; Cavaleri, M.; Donno, A.. - In: LINEAR ALGEBRA AND ITS APPLICATIONS. - ISSN 0024-3795. - 614:(2021), pp. 256-269. [10.1016/j.laa.2020.04.025]
Godsil-McKay switching for mixed and gain graphs over the circle group
Belardo F.
;Brunetti M.;
2021
Abstract
In this paper we describe two methods, both inspired from Godsil-McKay switching on simple graphs, to build cospectral gain graphs whose gain group consists of the complex numbers of modulus 1 (the circle group). The results obtained here can be also applied to the Hermitian matrix of mixed graphs.File in questo prodotto:
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