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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 3508 difprsnss 3834 trin2 5156 fundif 5402 imadiflem 5437 fnun 5466 fco 5529 f1co 5587 foco 5603 f1oun 5636 f1oco 5639 eqfunfv 5782 ftpg 5870 issmo 6521 tfrlem5 6547 ener 7021 domtr 7027 unen 7060 xpdom2 7084 mapen 7101 pm54.43 7489 axpre-lttrn 8204 axpre-mulgt0 8207 zmulcl 9636 qaddcl 9973 qmulcl 9975 rpaddcl 10016 rpmulcl 10017 rpdivcl 10018 xrltnsym 10132 xrlttri3 10136 ge0addcl 10320 ge0mulcl 10321 ge0xaddcl 10322 expclzaplem 10932 expge0 10944 expge1 10945 hashfacen 11216 qredeu 12802 nn0gcdsq 12905 mul4sq 13100 ballotfilem2 13153 cnovex 15110 iscn2 15114 txuni 15177 txcn 15189 lgsne0 15960 mul2sq 16038 |
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