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BiAndChopImport
⊢
f
∧
(
f
1
;
g
)
⊃
(
f
∧
f
1
) ;
g
BiAndChopImport
Proof:
1
⊢
f
⊃
(
f
1
⊃
f
∧
f
1
)
Prop
2
⊢
f
⊃
(
f
1
⊃
f
∧
f
1
)
1
,
BiImpBiRule
3
⊢
(
f
1
⊃
f
∧
f
1
)
⊃
f
;
g
⊃
(
f
∧
f
1
) ;
g
BiChopImpChop
4
⊢
f
;
g
⊃
(
f
∧
f
1
) ;
g
1
,
3
,
MP
qed
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2023-09-12
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