fact: Definition eigenpoly n (g : 'M_n) : pred {poly K} := (fun p => kermxpoly g p != 0).
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat choice seq) mathcomp(div fintype tuple finfun bigop fingroup perm) mathcomp(ssralg zmodp matrix mxalgebra poly polydiv)