fact: Definition RV_of (P : {fdist U}) := fun (phA : phant (Equality.sort U)) (phT : phant (Equality.sort T)) => RV P.
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