2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/106433We verify the Grone Merris conjecture for a class of graphs. We do this by curve sketching in the sense of first year calculus. That is, we do it by homotopy methods.14 pagesClassical Analysis and ODEsCombinatorics15A42The Grone Merris Conjecture and a quadratic eigenvalue problemtext