proposition: Lemma norm_conjC x : `|x^*| = `|x|.
proof: Proof. by rewrite !normC_def conjCK mulrC. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(ssrAC div fintype path bigop order finset fingroup) mathcomp(ssralg poly)