New skew equienergetic oriented graphs
Let $S(G^{\sigma})$ be the skew-adjacency matrix of the oriented graph $G^{\sigma}$, which is obtained from a simple undirected graph $G$ by assigning an orientation $\sigma$ to each of its edges. The skew energy of an oriented graph $G^{\sigma}$ is defined as the sum of absolute values of all eigen...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Azarbaijan Shahide Madani University
2019-06-01
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| Series: | Communications in Combinatorics and Optimization |
| Subjects: | |
| Online Access: | http://comb-opt.azaruniv.ac.ir/article_13786_f2e382fc36d6b753b4c6c9d7e3b92229.pdf |
| Summary: | Let $S(G^{\sigma})$ be the skew-adjacency matrix of the oriented graph $G^{\sigma}$, which is obtained from a simple undirected graph $G$ by assigning an orientation $\sigma$ to each of its edges. The skew energy of an oriented graph $G^{\sigma}$ is defined as the sum of absolute values of all eigenvalues of $S(G^{\sigma})$. Two oriented graphs are said to be skew equienergetic if
their skew energies are equal. In this paper, we determine the skew spectra of some new oriented graphs. As applications, we give some
new methods to construct new non-cospectral skew equienergetic oriented graphs. |
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| ISSN: | 2538-2128 2538-2136 |