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| Mirrors > Home > MPE Home > Th. List > sylan9r | Structured version Visualization version GIF version | ||
| Description: Nested syllogism inference conjoining dissimilar antecedents. (Contributed by NM, 14-May-1993.) |
| Ref | Expression |
|---|---|
| sylan9r.1 | ⊢ (𝜑 → (𝜓 → 𝜒)) |
| sylan9r.2 | ⊢ (𝜃 → (𝜒 → 𝜏)) |
| Ref | Expression |
|---|---|
| sylan9r | ⊢ ((𝜃 ∧ 𝜑) → (𝜓 → 𝜏)) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sylan9r.1 | . . 3 ⊢ (𝜑 → (𝜓 → 𝜒)) | |
| 2 | sylan9r.2 | . . 3 ⊢ (𝜃 → (𝜒 → 𝜏)) | |
| 3 | 1, 2 | syl9r 79 | . 2 ⊢ (𝜃 → (𝜑 → (𝜓 → 𝜏))) |
| 4 | 3 | imp 412 | 1 ⊢ ((𝜃 ∧ 𝜑) → (𝜓 → 𝜏)) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 401 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 |
| This proof depends on definitions: df-bi 210 df-an 402 |
| This theorem is used by: 3orel13 1518 spimt 2418 euim 2645 ceqsalt 3487 spcimgft 3514 feldmfvelcdm 7113 limsssuc 7888 tfindsg 7899 findsg 7936 f1oweALT 8011 oaordi 8585 pssnn 9215 inf3lem2 9660 updjudhf 10042 cardlim 10083 ac10ct 10143 cardaleph 10198 cfub 10356 cfcoflem 10380 hsmexlem2 10535 zorn2lem7 10610 pwcfsdom 10698 grur1a 10934 genpcd 11121 supadd 12315 supmul 12319 zeo 12815 uzwo 13068 xrub 13472 iccsupr 13603 reuccatpfxs1lem 14926 climuni 15751 efgi2 19972 opnnei 23471 tgcn 23603 locfincf 23883 uffix 24273 alexsubALTlem2 24400 alexsubALT 24403 metrest 24876 causs 25652 ocin 31931 spanuni 32179 superpos 32989 bnj518 35599 dfac16 35859 nndivsub 37436 bj-spimtv 37897 bj-snmoore 38238 cover2 38854 metf1o 38892 sn-axprlem3 43476 intabssd 44723 relpfrlem 46149 stoweidlem62 47287 pgindnf 51099 |
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