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ChopPlusImpCS
⊢
f
+
⊃
f
∗
ChopPlusImpCS
Proof:
1
⊢
f
+
⊃
empty
∨
f
+
Prop
2
⊢
f
+
⊃
f
∗
1
,
def. of
∗
qed
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2023-09-12
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