Laboratoire de Mathématiques de Versailles (LMV), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)
Consider a balanced nontriangular two-color Polya–Eggenberger urn process, assumed to be large, which means that the ratio $$\sigma $$ of the replacement matrix eigenvalues satisfies $$1/2