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 |