On the distance spectral gap and construction of D-equienergetic graphs

Haritha T, Chithra A.

Let $D(G)$ denote the distance matrix of a connected graph $G$ with $n$ vertices. The distance spectral gap of a graph $G$ is defined as ${\delta }_{D^G}={\rho }_1-{\rho }_2$, where ${\rho }_1$ and $ρ_2…