/3 width=3 by cprs_strap2, cpr_cprs, cpr_bind, cpr_zeta/
qed.
-lemma cprs_tau: ∀G,L,T1,T2. ⦃G, L⦄ ⊢ T1 ➡* T2 → ∀V. ⦃G, L⦄ ⊢ ⓝV.T1 ➡* T2.
+lemma cprs_eps: ∀G,L,T1,T2. ⦃G, L⦄ ⊢ T1 ➡* T2 → ∀V. ⦃G, L⦄ ⊢ ⓝV.T1 ➡* T2.
#G #L #T1 #T2 #H @(cprs_ind … H) -T2
-/3 width=3 by cprs_strap1, cpr_cprs, cpr_tau/
+/3 width=3 by cprs_strap1, cpr_cprs, cpr_eps/
qed.
lemma cprs_beta_dx: ∀a,G,L,V1,V2,W1,W2,T1,T2.