proposition: Lemma bigmin_set1 j F : \big[min/x]_(i in [set j]) F i = min (F j) x.
proof: Proof. exact: big_set1E. Qed.
imports: HB(structures) mathcomp(ssreflect ssrfun ssrbool eqtype ssrnat choice seq) mathcomp(path fintype tuple bigop finset div prime finfun) mathcomp(finset)