lemma cpcs_cpr_conf: ∀L,T1,T. L ⊢ T ➡ T1 → ∀T2. L ⊢ T ⬌* T2 → L ⊢ T1 ⬌* T2.
/3 width=3/ qed.
-lemma cpcs_tpss_strap1: ∀L,T1,T. L ⊢ T1 ⬌* T →
+lemma cpcs_tpss_strap1: ∀L,T1,T. L ⊢ T1 ⬌* T →
∀T2,d,e. L ⊢ T ▶* [d, e] T2 → L ⊢ T1 ⬌* T2.
#L #T1 #T #HT1 #T2 #d #e #HT2
@(cpcs_cpr_strap1 … HT1) -T1 /2 width=3/
clear_pc3_trans pc3_ind_left
pc3_head_1 pc3_head_2 pc3_head_12 pc3_head_21
pc3_pr2_fsubst0 pc3_pr2_fsubst0_back pc3_fsubst0
-*)
+*)
(* Basic_1: removed local theorems 6:
pc3_left_pr3 pc3_left_trans pc3_left_sym pc3_left_pc3 pc3_pc3_left
pc3_wcpr0_t_aux