fact: Record class_of (X : set A) : Type := Class { base : CSet.mixin_of X ; mixin : NESet.mixin_of X }.
imports: HB(structures) Reals mathcomp(all_ssreflect ssralg ssrnum) mathcomp(mathcomp_extra boolp classical_sets Rstruct reals) mathcomp(finmap) Reals_ext realType_ext classical_sets_ext ssrR fdist fsdist convex