- â\88\80n1,T1. â¦\83G,Lâ¦\84 ⊢ T1 :*[h,a,n1] T0 →
- â\88\80n2,T2. â¦\83G,Lâ¦\84 â\8a¢ T0 :*[h,a,n2] T2 â\86\92 â¦\83G,Lâ¦\84 ⊢ T1 :*[h,a,n1+n2] T2.
+ â\88\80n1,T1. â\9dªG,Lâ\9d« ⊢ T1 :*[h,a,n1] T0 →
+ â\88\80n2,T2. â\9dªG,Lâ\9d« â\8a¢ T0 :*[h,a,n2] T2 â\86\92 â\9dªG,Lâ\9d« ⊢ T1 :*[h,a,n1+n2] T2.