At: formula imp left sound1111221212 1. concl: Formula List 2. M: Formula List 3. N: Formula List 4. q: Formula 5. r: Formula 6. a: Assignment 7. a | < M @ (qr.N),concl > 8. a | < M @ N,q.concl > 9. a |= < M @ N,q.concl >
a |= < r.(M @ N),concl > a | < r.(M @ N),concl > By: Inst
Thm*S:Sequent, a:Assignment. (a |= S & a | S)
[ < M @ N,q.concl > ;a] Generated subgoal: