proposition: Fact int_of_Z_is_multiplicative : multiplicative int_of_Z.
proof: Proof. exact: can2_rmorphism Z_of_intK int_of_ZK. Qed.
imports: Coq(ZArith) HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat seq path) mathcomp(div choice fintype tuple finfun bigop finset prime) mathcomp(order binomial ssralg countalg ssrnum ssrint) mathcomp(zify_ssreflect)