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BaImpBt
⊢
f
⊃
f
BaImpBt
Proof:
1
⊢
f
≡
f
BaEqvBiBt
2
⊢
f
⊃
f
BiElim
3
⊢
f
⊃
f
1
,
2
,
MP
qed
Here is an easy corollary:
⊢
f
⊃
f
DiamondImpDa
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2024-08-03
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