proposition: Lemma prodf_div I r (P : pred I) (E D : I -> F) : \prod_(i <- r | P i) (E i / D i) = \prod_(i <- r | P i) E i / \prod_(i <- r | P i) D i.
proof: Proof. by rewrite big_split prodfV. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat div seq) mathcomp(choice fintype finfun bigop prime binomial)