fact: Definition lambda_calculus_ind_prop {L : lambda_calculus_data} (A : ∏ n (l : L n), hProp) (f_var : ∏ n i, A n (var i)) (f_app : ∏ n l l', A _ l → A _ l' → A n (app l l')) (f_abs : ∏ n l, A _ l → A n (abs l)) (f_subst : ∏ m n l f, A m l → (∏ i, A _ (f i)) → A n (subst l f)) : (∏ n l, A n l).
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.Combinatorics.StandardFiniteSets UniMath.Combinatorics.Tuples