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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 577 2exeu 2172 eqtr2 2250 pm13.181 2484 rmob 3125 disjne 3548 seex 4432 tron 4479 fssres 5512 funbrfvb 5686 funopfvb 5687 fvelrnb 5693 fvco 5716 fvimacnvi 5761 ffvresb 5810 fcof 5832 funresdfunsnss 5856 fvtp2g 5862 fvtp2 5865 fnex 5875 funex 5876 1st2nd 6343 dftpos4 6428 nnmsucr 6655 nnmcan 6686 xpmapenlem 7034 fundmfibi 7136 sup3exmid 9136 nzadd 9531 peano5uzti 9587 fnn0ind 9595 uztrn2 9773 irradd 9879 xltnegi 10069 xaddnemnf 10091 xaddnepnf 10092 xaddcom 10095 xnegdi 10102 elioore 10146 uzsubsubfz1 10282 fzo1fzo0n0 10421 elfzonelfzo 10474 qbtwnxr 10516 faclbnd 11002 faclbnd3 11004 swrdccat3b 11320 dvdsprime 12693 pcgcd 12901 znf1o 14664 restuni 14895 stoig 14896 cnnei 14955 tgioo 15277 divcnap 15288 ivthdich 15376 lgsdi 15765 bj-indind 16527 |
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