At: formula imp left falsifiable 1 1 1 1
1. concl: Formula List
2. M: Formula List
3. N: Formula List
4. q: Formula
5. r: Formula
6. a: Assignment
7. a |= r
8.
F
M.a |= F
9.
F
N.a |= F
10.
F
concl.a |
F
a |= q


r
By: BackThru
Thm*
a:Assignment, q,r:Formula. a |= q


r 
a |
q
a |= r
Generated subgoal:
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