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

r
9.
F
N.a |= F
10.
F
concl.a |
F
11. a |= r
a |= q &
F
M.a |= F &
F
N.a |= F &
F
concl.a |
F
a |= r &
F
M.a |= F &
F
N.a |= F &
F
concl.a |
F
By: Choose [2]
Generated subgoals:None
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