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DfEqvDf

⊢ f ≡ g ⇒ ⊢ f ≡ g DfEqvDf

Proof:

1
f ≡ g
Assump
2
f ⌢ true ≡ g ⌢ true
1,LeftChopEqvChop
3
f ≡ g
2, def. of 

qed

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2023-09-12
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