proposition: Lemma quotient_cyclic G H : cyclic G -> cyclic (G / H).
proof: Proof. exact: morphim_cyclic. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun eqtype ssrnat seq choice div) mathcomp(fintype bigop prime finset fingroup morphism) mathcomp(perm automorphism quotient gproduct ssralg) mathcomp(finalg zmodp poly)