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EmptyOrChopEqv
⊢
(
empty
∨
f
) ;
g
≡
g
∨
(
f
;
g
)
EmptyOrChopEqv
Proof:
1
⊢
(
empty
∨
f
) ;
g
≡
(
empty
;
g
)
∨
(
f
;
g
)
OrChopEqv
2
⊢
empty
;
g
≡
g
EmptyChop
3
⊢
(
empty
∨
f
) ;
g
≡
g
∨
(
f
;
g
)
1
,
2
,
Prop
qed
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2024-08-03
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