fact: Definition ind_var (L : lambda_calculus_data) : UU := ∏ A f_var f_app f_abs f_subst f_paths n i, lambda_calculus_ind (L := L) A f_var f_app f_abs f_subst f_paths n (var i) = f_var _ i.
imports: UniMath.Foundations.All UniMath.MoreFoundations.All UniMath.Combinatorics.StandardFiniteSets UniMath.Combinatorics.Tuples