Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > sylan2b | Structured version Visualization version GIF version |
Description: A syllogism inference. (Contributed by NM, 21-Apr-1994.) |
Ref | Expression |
---|---|
sylan2b.1 | ⊢ (𝜑 ↔ 𝜒) |
sylan2b.2 | ⊢ ((𝜓 ∧ 𝜒) → 𝜃) |
Ref | Expression |
---|---|
sylan2b | ⊢ ((𝜓 ∧ 𝜑) → 𝜃) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | sylan2b.1 | . . 3 ⊢ (𝜑 ↔ 𝜒) | |
2 | 1 | biimpi 215 | . 2 ⊢ (𝜑 → 𝜒) |
3 | sylan2b.2 | . 2 ⊢ ((𝜓 ∧ 𝜒) → 𝜃) | |
4 | 2, 3 | sylan2 592 | 1 ⊢ ((𝜓 ∧ 𝜑) → 𝜃) |
Copyright terms: Public domain | W3C validator |