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DiEqvDi
⊢
f
≡
g
⇒ ⊢
f
≡
g
DiEqvDi
Proof:
1
⊢
f
≡
f
1
given
2
⊢
f
;
true
≡
g
;
true
1
,
LeftChopEqvChop
3
⊢
f
≡
g
2
,
def. of
qed
Here is a corollary for the operator
:
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2023-09-12
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