proposition: Lemma fdist1E a0 : fdist1 a0 = (a0 == a)%bool%:R.
proof: Proof. by rewrite /fdist1; 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