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ImpChopPlus
⊢
f
⊃
f
+
ImpChopPlus
Proof:
1
⊢
f
+
≡
f
∨
(
f
∧
more
) ;
f
+
ChopPlusEqv
2
⊢
f
⊃
f
+
1
,
Prop
qed
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2023-09-12
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