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Mirrors > Home > MPE Home > Th. List > mp3an | Structured version Visualization version GIF version |
Description: An inference based on modus ponens. (Contributed by NM, 14-May-1999.) |
Ref | Expression |
---|---|
mp3an.1 | ⊢ 𝜑 |
mp3an.2 | ⊢ 𝜓 |
mp3an.3 | ⊢ 𝜒 |
mp3an.4 | ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃) |
Ref | Expression |
---|---|
mp3an | ⊢ 𝜃 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | mp3an.2 | . 2 ⊢ 𝜓 | |
2 | mp3an.3 | . 2 ⊢ 𝜒 | |
3 | mp3an.1 | . . 3 ⊢ 𝜑 | |
4 | mp3an.4 | . . 3 ⊢ ((𝜑 ∧ 𝜓 ∧ 𝜒) → 𝜃) | |
5 | 3, 4 | mp3an1 1446 | . 2 ⊢ ((𝜓 ∧ 𝜒) → 𝜃) |
6 | 1, 2, 5 | mp2an 688 | 1 ⊢ 𝜃 |
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