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| Mirrors > Home > ILE Home > Th. List > syl3an2 | GIF version | ||
| Description: A syllogism inference. (Contributed by NM, 22-Aug-1995.) |
| Ref | Expression |
|---|---|
| syl3an2.1 | ⊢ (𝜑 → 𝜒) |
| syl3an2.2 | ⊢ ((𝜓 ∧ 𝜒 ∧ 𝜃) → 𝜏) |
| Ref | Expression |
|---|---|
| syl3an2 | ⊢ ((𝜓 ∧ 𝜑 ∧ 𝜃) → 𝜏) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | syl3an2.1 | . . 3 ⊢ (𝜑 → 𝜒) | |
| 2 | syl3an2.2 | . . . 4 ⊢ ((𝜓 ∧ 𝜒 ∧ 𝜃) → 𝜏) | |
| 3 | 2 | 3exp 1233 | . . 3 ⊢ (𝜓 → (𝜒 → (𝜃 → 𝜏))) |
| 4 | 1, 3 | syl5 32 | . 2 ⊢ (𝜓 → (𝜑 → (𝜃 → 𝜏))) |
| 5 | 4 | 3imp 1224 | 1 ⊢ ((𝜓 ∧ 𝜑 ∧ 𝜃) → 𝜏) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ w3a 1009 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This proof depends on definitions: df-bi 117 df-3an 1011 |
| This theorem is used by: syl3an2b 1315 syl3an2br 1318 syl3anl2 1327 nndi 6763 nnmass 6764 prarloclemarch2 7792 1idprl 7963 1idpru 7964 recexprlem1ssl 8006 recexprlem1ssu 8007 msqge0 8952 mulge0 8955 divsubdirap 9046 divdiv32ap 9058 peano2uz 9999 fzoshftral 10674 expdivap 11048 bcval5 11223 ccats1val1g 11429 redivap 11661 imdivap 11668 absdiflt 11881 absdifle 11882 retanclap 12514 tannegap 12520 lcmgcdeq 12886 isprm3 12921 prmdvdsexpb 12953 dvdsprmpweqnn 13144 mulgaddcomlem 14007 mulginvcom 14009 cnpf2 15433 blres 15660 |
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