proposition: Lemma mutual_info_sym (A B : finType) (PQ : {fdist A * B}) : mutual_info PQ = mutual_info (fdistX PQ).
proof: Proof. by rewrite !mutual_infoE entropyB fdistX1. Qed.
imports: mathcomp(all_ssreflect all_algebra fingroup perm matrix) Reals mathcomp(Rstruct) ssrR Reals_ext realType_ext ssr_ext ssralg_ext bigop_ext logb ln_facts fdist jfdist_cond proba binary_entropy_function divergence