Unifying adjacency, Laplacian, and signless Laplacian theories

Aniruddha Samanta, Deepshikha, Kinkar Chandra Das

Let $G$ be a simple graph with associated diagonal matrix of vertex degrees $D(G)$, adjacency matrix $A(G)$, Laplacian matrix $L(G)$ and signless Laplacian matrix $Q(G)$. Recently,…