proposition: Lemma fdist_prodE ab : fdist_prod ab = P ab.1 * W ab.1 ab.2.
proof: Proof. by rewrite /fdist_prod; unlock; rewrite ffunE. Qed.
imports: mathcomp(all_ssreflect ssralg fingroup perm matrix) mathcomp(all_algebra vector reals normedtype) mathcomp(mathcomp_extra boolp) mathcomp(Rstruct) ssrR logb realType_ext ssr_ext ssralg_ext bigop_ext