- â\88\80p,V1,T1,X2. â\9dªG,Lâ\9d« ⊢ ⓓ[p]V1.T1 ➡*[h,n] X2 →
- â\88¨â\88¨ â\88\83â\88\83V2,T2. â\9dªG,Lâ\9d« â\8a¢ V1 â\9e¡*[h,0] V2 & â\9dªG,L.â\93\93V1â\9d« ⊢ T1 ➡*[h,n] T2 & X2 = ⓓ[p]V2.T2
- | â\88\83â\88\83T2. â\9dªG,L.â\93\93V1â\9d« ⊢ T1 ➡*[h,n] T2 & ⇧[1] X2 ≘ T2 & p = Ⓣ.
+ â\88\80p,V1,T1,X2. â\9d¨G,Lâ\9d© ⊢ ⓓ[p]V1.T1 ➡*[h,n] X2 →
+ â\88¨â\88¨ â\88\83â\88\83V2,T2. â\9d¨G,Lâ\9d© â\8a¢ V1 â\9e¡*[h,0] V2 & â\9d¨G,L.â\93\93V1â\9d© ⊢ T1 ➡*[h,n] T2 & X2 = ⓓ[p]V2.T2
+ | â\88\83â\88\83T2. â\9d¨G,L.â\93\93V1â\9d© ⊢ T1 ➡*[h,n] T2 & ⇧[1] X2 ≘ T2 & p = Ⓣ.