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| Mirrors > Home > ILE Home > Th. List > syl3an3 | GIF version | ||
| Description: A syllogism inference. (Contributed by NM, 22-Aug-1995.) |
| Ref | Expression |
|---|---|
| syl3an3.1 | ⊢ (𝜑 → 𝜃) |
| syl3an3.2 | ⊢ ((𝜓 ∧ 𝜒 ∧ 𝜃) → 𝜏) |
| Ref | Expression |
|---|---|
| syl3an3 | ⊢ ((𝜓 ∧ 𝜒 ∧ 𝜑) → 𝜏) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | syl3an3.1 | . . 3 ⊢ (𝜑 → 𝜃) | |
| 2 | syl3an3.2 | . . . 4 ⊢ ((𝜓 ∧ 𝜒 ∧ 𝜃) → 𝜏) | |
| 3 | 2 | 3exp 1233 | . . 3 ⊢ (𝜓 → (𝜒 → (𝜃 → 𝜏))) |
| 4 | 1, 3 | syl7 69 | . 2 ⊢ (𝜓 → (𝜒 → (𝜑 → 𝜏))) |
| 5 | 4 | 3imp 1224 | 1 ⊢ ((𝜓 ∧ 𝜒 ∧ 𝜑) → 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: syl3an3b 1316 syl3an3br 1319 vtoclgft 2873 ovmpox 6220 ovmpoga 6221 nnanq0 7831 apreim 8939 apsub1 8978 divassap 9028 ltmul2 9194 ind0 9310 xleadd1 10293 xltadd2 10295 elfzo 10572 fzodcel 10576 subcn2 12101 mulcn2 12102 ndvdsp1 12723 gcddiv 12820 lcmneg 12876 mulgaddcom 14007 lspsnss 14849 rnglidlrng 14943 neipsm 15397 opnneip 15402 hmeof1o2 15551 blcntrps 15658 blcntr 15659 neibl 15734 blnei 15735 metss 15737 rpcxpsub 16158 cxpcom 16190 rplogbzexp 16207 konigsbergssiedgwpren 16948 |
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