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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 1203 | . 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 411 | 1 ⊢ (𝜑 → 𝜂) |
| Colors of variables: wff set class |
| Syntax hints: → wi 4 ∧ wa 104 ∧ w3a 1004 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 |
| This theorem depends on definitions: df-bi 117 df-3an 1006 |
| This theorem is referenced by: syl32anc 1281 stoic4b 1477 enq0tr 7659 ltmul12a 9045 lt2msq1 9070 ledivp1 9088 lemul1ad 9124 lemul2ad 9125 lediv2ad 9959 xaddge0 10118 difelfznle 10375 expubnd 10864 nn0leexp2 10978 expcanlem 10983 expcand 10985 swrds1 11258 ccatswrd 11260 pfxfv 11274 swrdccatin1 11315 pfxccatin12lem3 11322 xrmaxaddlem 11843 mertenslemi1 12119 eftlub 12274 dvdsadd 12420 3dvds 12448 divalgmod 12511 bitsfzolem 12538 bitsfzo 12539 bitsmod 12540 bitsinv1lem 12545 gcdzeq 12616 rplpwr 12621 sqgcd 12623 bezoutr 12626 rpmulgcd2 12690 rpdvds 12694 isprm5 12737 divgcdodd 12738 oddpwdclemxy 12764 divnumden 12791 crth 12819 phimullem 12820 coprimeprodsq2 12854 pythagtriplem19 12878 pclemub 12883 pcpre1 12888 pcidlem 12919 pockthlem 12952 prmunb 12958 kerf1ghm 13884 elrhmunit 14215 rrgnz 14306 znunit 14697 xblss2ps 15157 xblss2 15158 metcnpi3 15270 limcimolemlt 15417 limccnp2cntop 15430 dvmulxxbr 15455 dvcoapbr 15460 ltexp2d 15695 mpodvdsmulf1o 15743 lgsquad2lem2 15840 2lgsoddprmlem1 15863 2sqlem8a 15880 2sqlem8 15881 |
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