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| Mirrors > Home > ILE Home > Th. List > sylanb | GIF version | ||
| Description: A syllogism inference. (Contributed by NM, 18-May-1994.) |
| Ref | Expression |
|---|---|
| sylanb.1 | ⊢ (𝜑 ↔ 𝜓) |
| sylanb.2 | ⊢ ((𝜓 ∧ 𝜒) → 𝜃) |
| Ref | Expression |
|---|---|
| sylanb | ⊢ ((𝜑 ∧ 𝜒) → 𝜃) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sylanb.1 | . . 3 ⊢ (𝜑 ↔ 𝜓) | |
| 2 | 1 | biimpi 120 | . 2 ⊢ (𝜑 → 𝜓) |
| 3 | sylanb.2 | . 2 ⊢ ((𝜓 ∧ 𝜒) → 𝜃) | |
| 4 | 2, 3 | sylan 283 | 1 ⊢ ((𝜑 ∧ 𝜒) → 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: syl2anb 291 anabsan 575 2exeu 2170 eqtr2 2248 pm13.181 2482 rmob 3123 disjne 3546 seex 4430 tron 4477 fssres 5509 funbrfvb 5682 funopfvb 5683 fvelrnb 5689 fvco 5712 fvimacnvi 5757 ffvresb 5806 fcof 5828 funresdfunsnss 5852 fvtp2g 5858 fvtp2 5861 fnex 5871 funex 5872 1st2nd 6339 dftpos4 6424 nnmsucr 6651 nnmcan 6682 xpmapenlem 7030 fundmfibi 7128 sup3exmid 9127 nzadd 9522 peano5uzti 9578 fnn0ind 9586 uztrn2 9764 irradd 9870 xltnegi 10060 xaddnemnf 10082 xaddnepnf 10083 xaddcom 10086 xnegdi 10093 elioore 10137 uzsubsubfz1 10273 fzo1fzo0n0 10412 elfzonelfzo 10465 qbtwnxr 10507 faclbnd 10993 faclbnd3 10995 swrdccat3b 11311 dvdsprime 12684 pcgcd 12892 znf1o 14655 restuni 14886 stoig 14887 cnnei 14946 tgioo 15268 divcnap 15279 ivthdich 15367 lgsdi 15756 bj-indind 16463 |
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