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| Mirrors > Home > ILE Home > Th. List > syl31anc | GIF version | ||
| Description: Syllogism combined with contraction. (Contributed by NM, 11-Mar-2012.) |
| Ref | Expression |
|---|---|
| sylXanc.1 | ⊢ (𝜑 → 𝜓) |
| sylXanc.2 | ⊢ (𝜑 → 𝜒) |
| sylXanc.3 | ⊢ (𝜑 → 𝜃) |
| sylXanc.4 | ⊢ (𝜑 → 𝜏) |
| syl31anc.5 | ⊢ (((𝜓 ∧ 𝜒 ∧ 𝜃) ∧ 𝜏) → 𝜂) |
| Ref | Expression |
|---|---|
| syl31anc | ⊢ (𝜑 → 𝜂) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sylXanc.1 | . . 3 ⊢ (𝜑 → 𝜓) | |
| 2 | sylXanc.2 | . . 3 ⊢ (𝜑 → 𝜒) | |
| 3 | sylXanc.3 | . . 3 ⊢ (𝜑 → 𝜃) | |
| 4 | 1, 2, 3 | 3jca 1208 | . 2 ⊢ (𝜑 → (𝜓 ∧ 𝜒 ∧ 𝜃)) |
| 5 | sylXanc.4 | . 2 ⊢ (𝜑 → 𝜏) | |
| 6 | syl31anc.5 | . 2 ⊢ (((𝜓 ∧ 𝜒 ∧ 𝜃) ∧ 𝜏) → 𝜂) | |
| 7 | 4, 5, 6 | syl2anc 415 | 1 ⊢ (𝜑 → 𝜂) |
| Colors of variables: wff set class |
| This proof depends on syntax axioms: → wi 4 ∧ wa 104 ∧ w3a 1009 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This proof depends on definitions: df-bi 117 df-3an 1011 |
| This theorem is used by: syl32anc 1286 stoic4b 1482 mapfi 7266 enq0tr 7808 ltmul12a 9199 lt2msq1 9224 ledivp1 9242 lemul1ad 9278 lemul2ad 9279 lediv2ad 10138 xaddge0 10298 difelfznle 10560 expubnd 11055 nn0leexp2 11171 expcanlem 11176 expcand 11178 hashmap 11291 swrds1 11463 ccatswrd 11465 pfxfv 11479 swrdccatin1 11520 pfxccatin12lem3 11527 xrmaxaddlem 12052 mertenslemi1 12328 eftlub 12483 dvdsadd 12629 3dvds 12657 divalgmod 12720 bitsfzolem 12747 bitsfzo 12748 bitsmod 12749 bitsinv1lem 12754 gcdzeq 12825 rplpwr 12830 sqgcd 12832 bezoutr 12835 rpmulgcd2 12899 rpdvds 12903 isprm5 12947 divgcdodd 12948 nnmaxpwlemxy 12974 divnumden 13002 crth 13032 phimullem 13033 coprimeprodsq2 13067 pythagtriplem19 13091 pclemub 13096 pcpre1 13101 pcidlem 13132 pockthlem 13165 prmunb 13171 kerf1ghm 14137 elrhmunit 14594 rrgnz 14687 znunit 15104 xblss2ps 15642 xblss2 15643 metcnpi3 15755 limcimolemlt 15902 limccnp2cntop 15915 dvmulxxbr 15940 dvcoapbr 15945 ltexp2d 16190 pellexlem3 16243 mpodvdsmulf1o 16296 bposlem1 16323 lgsquad2lem2 16418 2lgsoddprmlem1 16441 2sqlem8a 16458 2sqlem8 16459 |
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