Some Relations between Rank, Chromatic Number and Energy of Graphs

S. Akbari, E. Ghorbani, S. Zare

The energy of a graph $G$, denoted by $E(G)$, is defined as the sum of the absolute values of all eigenvalues of $G$. Let $G$ be a graph of order $n$ and $\mathrm{rank}(G)$ be the ran…