The adjacency spectrum of two new operations of graphs
Let be a graph and be its adjacency matrix. The eigenvalues of are the eigenvalues of and form the adjacency spectrum, denoted by . In this paper, we introduce two new operations and , and describe the adjacency spectra of and of regular graphs , and arbitrarily graphs , in terms of their adjacency...
Main Authors: | , , |
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Format: | Article |
Language: | English |
Published: |
Taylor & Francis Group
2018-12-01
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Series: | AKCE International Journal of Graphs and Combinatorics |
Subjects: | |
Online Access: | http://dx.doi.org/10.1016/j.akcej.2017.10.004 |
Summary: | Let be a graph and be its adjacency matrix. The eigenvalues of are the eigenvalues of and form the adjacency spectrum, denoted by . In this paper, we introduce two new operations and , and describe the adjacency spectra of and of regular graphs , and arbitrarily graphs , in terms of their adjacency spectra. As the applications, we obtain some new integral spectrum graphs. |
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ISSN: | 0972-8600 |