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Mirrors > Home > ILE Home > Th. List > syl3c | 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 56 | . 2 ⊢ (𝜑 → (𝜃 → 𝜏)) |
6 | 1, 5 | mpd 13 | 1 ⊢ (𝜑 → 𝜏) |
Colors of variables: wff set class |
Syntax hints: → wi 4 |
This theorem was proved from axioms: ax-1 5 ax-2 6 ax-mp 7 |
This theorem is referenced by: bilukdc 1287 frirrg 4087 tfrlem1 5923 caucvgprprlemval 6786 peano5uzti 8346 |
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