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Mirrors > Home > MPE Home > Th. List > mp3an23 | Structured version Visualization version GIF version |
Description: An inference based on modus ponens. (Contributed by NM, 14-Jul-2005.) |
Ref | Expression |
---|---|
mp3an23.1 | ⊢ 𝜓 |
mp3an23.2 | ⊢ 𝜒 |
mp3an23.3 | ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃) |
Ref | Expression |
---|---|
mp3an23 | ⊢ (𝜑 → 𝜃) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mp3an23.1 | . 2 ⊢ 𝜓 | |
2 | mp3an23.2 | . . 3 ⊢ 𝜒 | |
3 | mp3an23.3 | . . 3 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃) | |
4 | 2, 3 | mp3an3 1449 | . 2 ⊢ ((𝜑 ∧ 𝜓) → 𝜃) |
5 | 1, 4 | mpan2 688 | 1 ⊢ (𝜑 → 𝜃) |
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