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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 119 | . 2 ⊢ (𝜑 → 𝜓) |
3 | sylanb.2 | . 2 ⊢ ((𝜓 ∧ 𝜒) → 𝜃) | |
4 | 2, 3 | sylan 281 | 1 ⊢ ((𝜑 ∧ 𝜒) → 𝜃) |
Colors of variables: wff set class |
Syntax hints: → wi 4 ∧ wa 103 ↔ wb 104 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 |
This theorem depends on definitions: df-bi 116 |
This theorem is referenced by: syl2anb 289 anabsan 565 2exeu 2092 eqtr2 2159 pm13.181 2391 rmob 3005 disjne 3421 seex 4265 tron 4312 fssres 5306 funbrfvb 5472 funopfvb 5473 fvelrnb 5477 fvco 5499 fvimacnvi 5542 ffvresb 5591 funresdfunsnss 5631 fvtp2g 5637 fvtp2 5640 fnex 5650 funex 5651 1st2nd 6087 dftpos4 6168 nnmsucr 6392 nnmcan 6423 xpmapenlem 6751 fundmfibi 6835 sup3exmid 8739 nzadd 9130 peano5uzti 9183 fnn0ind 9191 uztrn2 9367 irradd 9465 xltnegi 9648 xaddnemnf 9670 xaddnepnf 9671 xaddcom 9674 xnegdi 9681 elioore 9725 uzsubsubfz1 9859 fzo1fzo0n0 9991 elfzonelfzo 10038 qbtwnxr 10066 faclbnd 10519 faclbnd3 10521 dvdsprime 11839 restuni 12380 stoig 12381 cnnei 12440 tgioo 12754 divcnap 12763 bj-indind 13301 |
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