Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
Mirrors > Home > MPE Home > Th. List > syl3c | Structured version Visualization version GIF version |
Description: A syllogism inference combined with contraction. (Contributed by Alan Sare, 7-Jul-2011.) |
Ref | Expression |
---|---|
syl3c.1 | ⊢ (𝜑 → 𝜓) |
syl3c.2 | ⊢ (𝜑 → 𝜒) |
syl3c.3 | ⊢ (𝜑 → 𝜃) |
syl3c.4 | ⊢ (𝜓 → (𝜒 → (𝜃 → 𝜏))) |
Ref | Expression |
---|---|
syl3c | ⊢ (𝜑 → 𝜏) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | syl3c.3 | . 2 ⊢ (𝜑 → 𝜃) | |
2 | syl3c.1 | . . 3 ⊢ (𝜑 → 𝜓) | |
3 | syl3c.2 | . . 3 ⊢ (𝜑 → 𝜒) | |
4 | syl3c.4 | . . 3 ⊢ (𝜓 → (𝜒 → (𝜃 → 𝜏))) | |
5 | 2, 3, 4 | sylc 65 | . 2 ⊢ (𝜑 → (𝜃 → 𝜏)) |
6 | 1, 5 | mpd 15 | 1 ⊢ (𝜑 → 𝜏) |
Copyright terms: Public domain | W3C validator |