proposition: Lemma root_mxminpoly a : root p_A a = root (char_poly A) a.
proof: Proof. by rewrite -eigenvalue_root_min eigenvalue_root_char. Qed.
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)