(* Inversion lemmas with normal terms ***************************************)
-lemma cpxs_inv_cnx1: ∀h,G,L,T1,T2. ⦃G, L⦄ ⊢ T1 ⬈*[h] T2 → ⦃G, L⦄ ⊢ ⬈[h] 𝐍⦃T1⦄ →
+lemma cpxs_inv_cnx1: ∀h,G,L,T1,T2. ⦃G,L⦄ ⊢ T1 ⬈*[h] T2 → ⦃G,L⦄ ⊢ ⬈[h] 𝐍⦃T1⦄ →
T1 ≛ T2.
#h #G #L #T1 #T2 #H @(cpxs_ind_dx … H) -T1
/5 width=9 by cnx_tdeq_trans, tdeq_trans/