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Theorem fregei 200
Description: Inference using transposition. Inference for frege 191.
Hypothesis
Ref Expression
fregei.1 (𝜑 → (𝜓𝜒))
Assertion
Ref Expression
fregei ((𝜑𝜓) → (𝜑𝜒))

Proof of Theorem fregei
StepHypRef Expression
Colors of variables: wff var nilad
Syntax hints:  wim 180
 WARNING: This theorem has an incomplete proof.
This theorem is referenced by: (None)
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