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Mirrors > Home > MPE Home > Th. List > mp3an12 | Structured version Visualization version GIF version |
Description: An inference based on modus ponens. (Contributed by NM, 13-Jul-2005.) |
Ref | Expression |
---|---|
mp3an12.1 | ⊢ 𝜑 |
mp3an12.2 | ⊢ 𝜓 |
mp3an12.3 | ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃) |
Ref | Expression |
---|---|
mp3an12 | ⊢ (𝜒 → 𝜃) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mp3an12.2 | . 2 ⊢ 𝜓 | |
2 | mp3an12.1 | . . 3 ⊢ 𝜑 | |
3 | mp3an12.3 | . . 3 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃) | |
4 | 2, 3 | mp3an1 1447 | . 2 ⊢ ((𝜓 ∧ 𝜒) → 𝜃) |
5 | 1, 4 | mpan 687 | 1 ⊢ (𝜒 → 𝜃) |
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