Energy of signed graphs and the vertex cover number

Aniruddha Samanta, Deepshikha, Kinkar Chandra Das

The energy $\mathcal{E}(\Gamma )$ of a signed graph $\Gamma =(G,\sigma )$ is the sum of the absolute values of the eigenvalues of its adjacency matrix $A(\Gamma )$. In this article, we prove that $\mathca…