proposition: Lemma is_finite_uniq (T : eqType) (P : pred T) (p : is_finite P) : uniq p.
proof: Proof. by case: p. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrnat eqtype ssrfun seq) mathcomp(choice path finset finfun fintype bigop)