proposition: Lemma fdist_proj13_dominN a b c : P (a, b, c) != 0 -> fdist_proj13 (a, c) != 0.
proof: Proof. by apply: contra => /eqP H; apply/eqP/fdist_proj13_domin. 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