proposition: Lemma pderivable_H2 : pderivable H2 (CSet.car open_unit_interval).
proof: Proof. move=> x /= [Hx0 Hx1]. apply derivable_pt_plus. apply derivable_pt_opp. apply derivable_pt_mult; [apply derivable_pt_id|apply derivable_pt_Log]. assumption. apply derivable_pt_opp. apply derivable_pt_mult. apply derivable_pt_Rminus. apply derivable_pt_comp. apply derivable_pt_Rminus. apply derivable_pt_Log. lra. Defined.
imports: HB(structures) mathcomp(all_ssreflect ssralg ssrnum matrix) mathcomp(mathcomp_extra Rstruct reals) Reals Ranalysis_ext Lra ssrR Reals_ext realType_ext logb ssr_ext ssralg_ext bigop_ext fdist jfdist_cond entropy convex binary_entropy_function log_sum divergence