2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/45787We apply the $1/N_c$ expansion in QCD to the baryon vertices. We find new model independent properties for the isoscalar and isovector baryon vertices from the view point of $1/N_c$ expansion in QCD. One of these results, $I=J$ rule, have been already found. The other properties, new $I=J$ rules, are the rules about the isospin and strangeness dependence for the baryon vertices.8 pages, LaTeX fileHigh Energy Physics - PhenomenologyNuclear Theorytext