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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 7261 enq0tr 7801 ltmul12a 9191 lt2msq1 9216 ledivp1 9234 lemul1ad 9270 lemul2ad 9271 lediv2ad 10122 xaddge0 10282 difelfznle 10544 expubnd 11035 nn0leexp2 11150 expcanlem 11155 expcand 11157 hashmap 11270 swrds1 11442 ccatswrd 11444 pfxfv 11458 swrdccatin1 11499 pfxccatin12lem3 11506 xrmaxaddlem 12028 mertenslemi1 12304 eftlub 12459 dvdsadd 12605 3dvds 12633 divalgmod 12696 bitsfzolem 12723 bitsfzo 12724 bitsmod 12725 bitsinv1lem 12730 gcdzeq 12801 rplpwr 12806 sqgcd 12808 bezoutr 12811 rpmulgcd2 12875 rpdvds 12879 isprm5 12922 divgcdodd 12923 oddpwdclemxy 12949 divnumden 12976 crth 13004 phimullem 13005 coprimeprodsq2 13039 pythagtriplem19 13063 pclemub 13068 pcpre1 13073 pcidlem 13104 pockthlem 13137 prmunb 13143 kerf1ghm 14079 elrhmunit 14486 rrgnz 14579 znunit 14996 xblss2ps 15507 xblss2 15508 metcnpi3 15620 limcimolemlt 15767 limccnp2cntop 15780 dvmulxxbr 15805 dvcoapbr 15810 ltexp2d 16050 pellexlem3 16099 mpodvdsmulf1o 16110 lgsquad2lem2 16213 2lgsoddprmlem1 16236 2sqlem8a 16253 2sqlem8 16254 |
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