fact: Definition cinde_rv := forall a b c, `Pr[ [% X, Y] = (a, b) | Z = c ] = `Pr[ X = a | Z = c ] * `Pr[ Y = b | Z = c].
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