fact: Variable (U : finType) (P : R.-fdist U) (X : {RV P -> R}) (F : {set U}).
imports: mathcomp(all_ssreflect ssralg ssrnum matrix) mathcomp(Rstruct reals) Reals Lra ssrR Reals_ext realType_ext logb ssr_ext ssralg_ext bigop_ext fdist