proposition: Lemma fdist1bind (R : realType) (A B : finType) (a : A) (f : A -> fdist R B) : fdist1 a >>= f = f a.
proof: Proof. apply/fdist_ext => b; rewrite fdistbindE /= (bigD1 a) //= fdist1xx mul1r. by rewrite big1 ?addr0// => a0 a0a; rewrite fdist10// mul0r. 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