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| Mirrors > Home > MPE Home > Th. List > sylanbr | Structured version Visualization version GIF version | ||
| Description: A syllogism inference. (Contributed by NM, 18-May-1994.) |
| Ref | Expression |
|---|---|
| sylanbr.1 | ⊢ (𝜓 ↔ 𝜑) |
| sylanbr.2 | ⊢ ((𝜓 ∧ 𝜒) → 𝜃) |
| Ref | Expression |
|---|---|
| sylanbr | ⊢ ((𝜑 ∧ 𝜒) → 𝜃) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sylanbr.1 | . . 3 ⊢ (𝜓 ↔ 𝜑) | |
| 2 | 1 | biimpri 231 | . 2 ⊢ (𝜑 → 𝜓) |
| 3 | sylanbr.2 | . 2 ⊢ ((𝜓 ∧ 𝜒) → 𝜃) | |
| 4 | 2, 3 | sylan 591 | 1 ⊢ ((𝜑 ∧ 𝜒) → 𝜃) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ↔ wb 209 ∧ wa 400 |
| 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 401 |
| This theorem is used by: syl2anbr 610 rspc4v 3600 funfv 6968 2mpo0 7661 tfrlem7 8368 omword 8553 isinf 9223 fsuppunbi 9347 axdc3lem2 10441 supsrlem 11102 expclzlem 14126 expgt0 14138 expge0 14141 expge1 14142 swrdnd2 14700 resqrex 15308 rplpwr 16622 4sqlem19 17029 gexcl3 19663 thlle 21858 decpmataa0 22936 neindisj 23285 ptcmplem5 24224 tsmsxplem1 24321 tsmsxplem2 24322 elovolmr 25646 itgsubst 26219 logeftb 26759 logbchbase 26947 nosupbnd1lem5 27887 noinfbnd1lem5 27902 legov 28865 unopbd 32378 nmcoplb 32393 nmcfnlb 32417 nmopcoi 32458 an52ds 32813 an62ds 32814 an72ds 32815 an82ds 32816 iocinif 33137 1arithufdlem4 33846 r1plmhm 33908 r1pquslmic 33909 voliune 34628 signstfvneq0 34968 axprALT2 35512 lfuhgr3 35620 f1omptsnlem 38010 unccur 38282 matunitlindflem2 38296 stoweidlem15 46757 hoiqssbllem3 47366 vonioo 47424 vonicc 47427 gboge9 48557 catprs 49817 |
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