Description: An inference based on modus ponens. (Contributed by NM, 13-Apr-1995)
| Ref | Expression | ||
|---|---|---|---|
| Hypotheses | mp2an.1 | ⊢ 𝜑 | |
| mp2an.2 | ⊢ 𝜓 | ||
| mp2an.3 | ⊢ ( ( 𝜑 ∧ 𝜓 ) → 𝜒 ) | ||
| Assertion | mp2an | ⊢ 𝜒 |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mp2an.1 | ⊢ 𝜑 | |
| 2 | mp2an.2 | ⊢ 𝜓 | |
| 3 | mp2an.3 | ⊢ ( ( 𝜑 ∧ 𝜓 ) → 𝜒 ) | |
| 4 | 1 3 | mpan | ⊢ ( 𝜓 → 𝜒 ) |
| 5 | 2 4 | ax-mp | ⊢ 𝜒 |