Hint Resolve degree_exp_wrt_exp_of_lc_exp : lngen.
(* begin hide *)

(* Specifications: *)
Lemma lc_exp_of_degree_size_mutual :
forall i1,
(forall e1,
size_exp e1 = i1 ->
degree_exp_wrt_exp 0 e1 ->
lc_exp e1).
Lemma lc_exp_of_degree_size_mutual :
forall i1,
(forall e1,
size_exp e1 = i1 ->
degree_exp_wrt_exp 0 e1 ->
lc_exp e1).