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TrueEqvTrueChopTrue
⊢
true
≡
true
;
true
TrueEqvTrueChopTrue
Proof:
1
⊢
true
;
true
⊃
true
Prop
2
⊢
true
⊃
true
DiIntro
3
⊢
true
⊃
true
;
true
2
,
def. of
4
⊢
true
≡
true
;
true
1
,
3
,
Prop
qed
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2023-09-12
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