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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 6217 ovmpoga 6218 nnanq0 7825 apreim 8931 apsub1 8970 divassap 9020 ltmul2 9186 ind0 9301 xleadd1 10277 xltadd2 10279 elfzo 10556 fzodcel 10560 subcn2 12077 mulcn2 12078 ndvdsp1 12699 gcddiv 12796 lcmneg 12852 mulgaddcom 13949 lspsnss 14741 rnglidlrng 14835 neipsm 15255 opnneip 15260 hmeof1o2 15409 blcntrps 15516 blcntr 15517 neibl 15592 blnei 15593 metss 15595 rpcxpsub 16010 cxpcom 16040 rplogbzexp 16056 konigsbergssiedgwpren 16726 |
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