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| Mirrors > Home > ILE Home > Th. List > syl2anb | GIF version | ||
| Description: A double syllogism inference. (Contributed by NM, 29-Jul-1999.) |
| Ref | Expression |
|---|---|
| syl2anb.1 | ⊢ (𝜑 ↔ 𝜓) |
| syl2anb.2 | ⊢ (𝜏 ↔ 𝜒) |
| syl2anb.3 | ⊢ ((𝜓 ∧ 𝜒) → 𝜃) |
| Ref | Expression |
|---|---|
| syl2anb | ⊢ ((𝜑 ∧ 𝜏) → 𝜃) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | syl2anb.2 | . 2 ⊢ (𝜏 ↔ 𝜒) | |
| 2 | syl2anb.1 | . . 3 ⊢ (𝜑 ↔ 𝜓) | |
| 3 | syl2anb.3 | . . 3 ⊢ ((𝜓 ∧ 𝜒) → 𝜃) | |
| 4 | 2, 3 | sylanb 284 | . 2 ⊢ ((𝜑 ∧ 𝜒) → 𝜃) |
| 5 | 1, 4 | sylan2b 287 | 1 ⊢ ((𝜑 ∧ 𝜏) → 𝜃) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ↔ wb 105 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This theorem depends on definitions: df-bi 117 |
| This theorem is referenced by: sylancb 418 stdcndc 853 reupick3 3510 difprsnss 3837 trin2 5159 fundif 5405 imadiflem 5440 fnun 5469 fco 5532 f1co 5590 foco 5606 f1oun 5639 f1oco 5642 eqfunfv 5785 ftpg 5873 issmo 6532 tfrlem5 6558 ener 7032 domtr 7038 unen 7071 xpdom2 7095 mapen 7112 pm54.43 7500 axpre-lttrn 8215 axpre-mulgt0 8218 zmulcl 9651 qaddcl 9988 qmulcl 9990 rpaddcl 10031 rpmulcl 10032 rpdivcl 10033 xrltnsym 10148 xrlttri3 10152 ge0addcl 10336 ge0mulcl 10337 ge0xaddcl 10338 expclzaplem 10952 expge0 10964 expge1 10965 hashfacen 11236 qredeu 12822 nn0gcdsq 12925 mul4sq 13120 ballotfilem2 13175 cnovex 15190 iscn2 15194 txuni 15257 txcn 15269 lgsne0 16040 mul2sq 16118 |
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