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LeftChopEqvChop
⊢
f
≡
f
1
⇒ ⊢
(
f ⌢ g
)
≡
(
f
1
⌢ g
)
LeftChopEqvChop
Proof:
1
f
≡
f
1
Assump
2
f
⊃
f
1
1
,
Prop
3
f ⌢ g
⊃
f
1
⌢ g
2
,
LeftChopImpChop
4
f
1
⊃
f
1
,
Prop
5
f
1
⌢ g
⊃
f ⌢ g
4
,
LeftChopImpChop
6
f ⌢ g
≡
f
1
⌢ g
3
,
5
,
Prop
qed
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2024-08-03
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