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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 10294 xltadd2 10296 elfzo 10573 fzodcel 10577 subcn2 12102 mulcn2 12103 ndvdsp1 12724 gcddiv 12821 lcmneg 12877 mulgaddcom 14008 lspsnss 14850 rnglidlrng 14944 neipsm 15380 opnneip 15385 hmeof1o2 15534 blcntrps 15641 blcntr 15642 neibl 15717 blnei 15718 metss 15720 rpcxpsub 16141 cxpcom 16173 rplogbzexp 16190 konigsbergssiedgwpren 16931 |
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