- â\88\80G1,L1,T1. â\9dªG1,L1â\9d« ⊢ ⬈*𝐒 T1 →
- â\88\80G2,L2,T2. â\9dªG1,L1,T1â\9d« â\89¥ â\9dªG2,L2,T2â\9d« â\86\92 â\9dªG2,L2â\9d« ⊢ ⬈*𝐒 T2.
+ â\88\80G1,L1,T1. â\9d¨G1,L1â\9d© ⊢ ⬈*𝐒 T1 →
+ â\88\80G2,L2,T2. â\9d¨G1,L1,T1â\9d© â\89¥ â\9d¨G2,L2,T2â\9d© â\86\92 â\9d¨G2,L2â\9d© ⊢ ⬈*𝐒 T2.