Computing the Additive Degree–Kirchhoff Index with the Laplacian Matrix

For any simple connected undirected graph, it is well known that the Kirchhoff and multiplicative degree–Kirchhoff indices can be computed using the Laplacian matrix. We show that the same is true for the additive degree–Kirchhoff index and give a compact Matlab program that computes all three Kirchhoffian indices with the Laplacian matrix as the only input.