On adjacency and Laplacian cospectral non-isomorphic signed graphs

Tahir Shamsher, S. Pirzada, Mushtaq A. Bhat

Let $\Gamma =(G,\sigma )$ be a signed graph, where $\sigma$ is the sign function on the edges of $G$. In this paper, we use the operation of partial transpose to obtain non-isomorphic Laplacian cos…