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Mirrors > Home > MPE Home > Th. List > com13 | Structured version Visualization version GIF version |
Description: Commutation of antecedents. Swap 1st and 3rd. (Contributed by NM, 25-Apr-1994.) (Proof shortened by Wolf Lammen, 28-Jul-2012.) |
Ref | Expression |
---|---|
com3.1 | ⊢ (𝜑 → (𝜓 → (𝜒 → 𝜃))) |
Ref | Expression |
---|---|
com13 | ⊢ (𝜒 → (𝜓 → (𝜑 → 𝜃))) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | com3.1 | . . 3 ⊢ (𝜑 → (𝜓 → (𝜒 → 𝜃))) | |
2 | 1 | com3r 87 | . 2 ⊢ (𝜒 → (𝜑 → (𝜓 → 𝜃))) |
3 | 2 | com23 86 | 1 ⊢ (𝜒 → (𝜓 → (𝜑 → 𝜃))) |
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