proposition: Lemma mx_irr_map : mx_irreducible rGf -> mx_irreducible rG.
proof: Proof. by move=> irrGf; apply: mxsimple_map; rewrite map_mx1. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq path) mathcomp(div choice fintype tuple finfun bigop prime) mathcomp(ssralg poly polydiv finset fingroup morphism) mathcomp(perm automorphism quotient finalg action zmodp) mathcomp(commutator cyclic center pgroup matrix mxalgebra) mathcomp(mxpoly)