proposition: Theorem mult_plus_distr_l (a b c: T1) : nf a -> nf b -> nf c -> a * (b + c) = a * b + a * c.
proof: Proof. intros Ha Hb Hc; apply (L0 Ha Hb Hc); auto. Qed.
imports: Coq(Arith Max Bool Lia Compare_dec Relations Ensembles Wellfounded Bool RelationClasses Operators_Properties ArithRing Logic.Eqdep_dec) hydras(More_Arith Restriction DecPreOrder) hydras(OrdNotations)