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DiOrEqv
⊢
(
f
∨
g
)
≡
f
∨
g
DiOrEqv
Proof:
1
⊢
(
f
∨
g
) ;
true
≡
f
;
true
∨
g
;
true
OrChopEqv
2
⊢
(
f
∨
g
)
≡
f
∨
g
1
,
def. of
qed
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2023-09-12
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