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StateAndChopImpChopRule
⊢
w
∧
f
⊃
f
1
⇒ ⊢
w
∧
(
f
;
g
)
⊃
(
f
1
;
g
)
StateAndChopImpChopRule
Proof:
1
⊢
w
∧
f
⊃
f
1
given
2
⊢
(
w
∧
f
) ;
g
⊃
f
1
;
g
1
,
LeftChopImpChop
3
⊢
(
w
∧
f
) ;
g
≡
w
∧
(
f
;
g
)
StateAndChop
4
⊢
w
∧
f
;
g
⊃
f
1
;
g
2
,
3
,
Prop
qed
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2024-08-03
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