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FNextImpNextRule
⊢
f
⊃
g
⇒
f
⊃
g
FNextImpNextRule
Proof:
1
f
⊃
g
Assump
2
⟨
skip
⟩
f
⊃ ⟨
skip
⟩
g
1
,
FRightSkipChopImpSkipChopRule
3
f
≡⟨
skip
⟩
f
FL2
4
g
≡⟨
skip
⟩
g
FL2
5
f
⊃
g
3
,
4
,
Prop
qed
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2023-09-12
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