Article ID Journal Published Year Pages File Type
421194 Discrete Applied Mathematics 2013 7 Pages PDF
Abstract

In this paper we present an equivalent definition of Co-PI index and then determine the eigenvalues of Co-PI matrices and their Laplacians of Cartesian product graphs, including bounds on the second and third Co-PI spectral moment of a graph. The explicit formulae for the Co-PI index of Cartesian product graphs are also presented.

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Physical Sciences and Engineering Computer Science Computational Theory and Mathematics
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