proposition: Lemma Re_i : 'Re 'i = 0.
proof: Proof. by rewrite ReE conjCi subrr mul0r. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq choice) mathcomp(ssrAC div fintype path bigop order finset fingroup) mathcomp(ssralg poly)