| 1 | 7. x: Var 8. ( x ) > 0 9. concl = (M @ ( x .N)) 10. S:Sequent.
(S) < ( < hyp,M @ ( x .N) > ) 
( L:Sequent List. s L.( (s) = 0) & ( s L.|= s  |= S ) & ( a:Assignment. s L.a | s  a | S)) L:Sequent List.
s L.( (s) = 0)
& ( s L.|= s  |= < hyp,M @ ( x .N) > )
& ( a:Assignment. s L.a | s  a | < hyp,M @ ( x .N) > ) |
| 2 | 7. x: Formula 8. (  x) > 0 9. concl = (M @ (  x.N)) 10. S:Sequent.
(S) < ( < hyp,M @ (  x.N) > ) 
( L:Sequent List. s L.( (s) = 0) & ( s L.|= s  |= S ) & ( a:Assignment. s L.a | s  a | S)) L:Sequent List.
s L.( (s) = 0)
& ( s L.|= s  |= < hyp,M @ (  x.N) > )
& ( a:Assignment. s L.a | s  a | < hyp,M @ (  x.N) > ) |
| 3 | 7. x1: Formula 8. x2: Formula 9. (x1  x2) > 0 10. concl = (M @ (x1  x2.N)) 11. S:Sequent.
(S) < ( < hyp,M @ (x1  x2.N) > ) 
( L:Sequent List. s L.( (s) = 0) & ( s L.|= s  |= S ) & ( a:Assignment. s L.a | s  a | S)) L:Sequent List.
s L.( (s) = 0)
& ( s L.|= s  |= < hyp,M @ (x1  x2.N) > )
& ( a:Assignment. s L.a | s  a | < hyp,M @ (x1  x2.N) > ) |
| 4 | 7. x1: Formula 8. x2: Formula 9. (x1  x2) > 0 10. concl = (M @ (x1  x2.N)) 11. S:Sequent.
(S) < ( < hyp,M @ (x1  x2.N) > ) 
( L:Sequent List. s L.( (s) = 0) & ( s L.|= s  |= S ) & ( a:Assignment. s L.a | s  a | S)) L:Sequent List.
s L.( (s) = 0)
& ( s L.|= s  |= < hyp,M @ (x1  x2.N) > )
& ( a:Assignment. s L.a | s  a | < hyp,M @ (x1  x2.N) > ) |
| 5 | 7. y1: Formula 8. y2: Formula 9. (y1   y2) > 0 10. concl = (M @ (y1   y2.N)) 11. S:Sequent.
(S) < ( < hyp,M @ (y1   y2.N) > ) 
( L:Sequent List. s L.( (s) = 0) & ( s L.|= s  |= S ) & ( a:Assignment. s L.a | s  a | S)) L:Sequent List.
s L.( (s) = 0)
& ( s L.|= s  |= < hyp,M @ (y1   y2.N) > )
& ( a:Assignment. s L.a | s  a | < hyp,M @ (y1   y2.N) > ) |