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Mirrors > Home > LLPE Home > Th. List > fregei | Structured version |
Description: Inference using transposition. Inference for frege 191. |
Ref | Expression |
---|---|
fregei.1 | ⊦ (𝜑 → (𝜓 → 𝜒)) |
Ref | Expression |
---|---|
fregei | ⊦ ((𝜑 → 𝜓) → (𝜑 → 𝜒)) |
Step | Hyp | Ref | 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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