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Mirrors > Home > ILE Home > Th. List > elex | Unicode version |
Description: If a class is a member of another class, then it is a set. Theorem 6.12 of [Quine] p. 44. (Contributed by NM, 5-Aug-1993.) (Proof shortened by Andrew Salmon, 8-Jun-2011.) |
Ref | Expression |
---|---|
elex |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | exsimpl 1604 | . 2 | |
2 | df-clel 2160 | . 2 | |
3 | isset 2727 | . 2 | |
4 | 1, 2, 3 | 3imtr4i 200 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wceq 1342 wex 1479 wcel 2135 cvv 2721 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-5 1434 ax-gen 1436 ax-ie1 1480 ax-ie2 1481 ax-8 1491 ax-4 1497 ax-17 1513 ax-i9 1517 ax-ial 1521 ax-ext 2146 |
This theorem depends on definitions: df-bi 116 df-sb 1750 df-clab 2151 df-cleq 2157 df-clel 2160 df-v 2723 |
This theorem is referenced by: elexi 2733 elexd 2734 elisset 2735 vtoclgft 2771 vtoclgf 2779 vtoclg1f 2780 vtocl2gf 2783 vtocl3gf 2784 spcimgft 2797 spcimegft 2799 elab4g 2870 elrabf 2875 mob 2903 sbcex 2954 sbcel1v 3008 sbcabel 3027 csbcomg 3063 csbvarg 3068 csbiebt 3079 csbnestgf 3092 csbidmg 3096 sbcco3g 3097 csbco3g 3098 eldif 3120 ssv 3159 elun 3258 elin 3300 elpwb 3563 snidb 3600 dfopg 3750 eluni 3786 eliun 3864 csbexga 4104 nvel 4109 class2seteq 4136 axpweq 4144 snelpwi 4184 opexg 4200 elopab 4230 epelg 4262 elon2 4348 unexg 4415 reuhypd 4443 sucexg 4469 sucelon 4474 onsucelsucr 4479 sucunielr 4481 en2lp 4525 peano2 4566 peano2b 4586 opelvvg 4647 opeliunxp 4653 opeliunxp2 4738 ideqg 4749 elrnmptg 4850 imasng 4963 iniseg 4970 opswapg 5084 elxp4 5085 elxp5 5086 dmmptg 5095 iota2 5173 fnmpt 5308 fvexg 5499 fvelimab 5536 mptfvex 5565 fvmptdf 5567 fvmptdv2 5569 mpteqb 5570 fvmptt 5571 fvmptf 5572 fvopab6 5576 fsn2 5653 fmptpr 5671 eloprabga 5920 ovmpos 5956 ov2gf 5957 ovmpodxf 5958 ovmpox 5961 ovmpoga 5962 ovmpodf 5964 ovi3 5969 ovelrn 5981 suppssfv 6040 suppssov1 6041 offval3 6094 1stexg 6127 2ndexg 6128 elxp6 6129 elxp7 6130 releldm2 6145 fnmpo 6162 mpofvex 6163 mpoexg 6171 opeliunxp2f 6197 brtpos2 6210 rdgtfr 6333 rdgruledefgg 6334 frec0g 6356 sucinc2 6405 nntri3or 6452 relelec 6532 ecdmn0m 6534 mapvalg 6615 pmvalg 6616 elpmg 6621 elixp2 6659 mptelixpg 6691 elixpsn 6692 map1 6769 mapdom1g 6804 mapxpen 6805 fival 6926 elfi2 6928 djulclr 7005 djurclr 7006 djulcl 7007 djurcl 7008 djulclb 7011 inl11 7021 djuss 7026 1stinl 7030 2ndinl 7031 1stinr 7032 2ndinr 7033 ismkvnex 7110 omniwomnimkv 7122 cc4n 7203 elinp 7406 addnqprlemfl 7491 addnqprlemfu 7492 mulnqprlemfl 7507 mulnqprlemfu 7508 recexprlemell 7554 recexprlemelu 7555 shftfvalg 10746 clim 11208 climmpt 11227 climshft2 11233 isstruct2r 12342 slotex 12358 setsvalg 12361 setsfun0 12367 setscom 12371 restval 12498 topnvalg 12504 toponsspwpwg 12561 tgval 12590 eltg 12593 eltg2 12594 restbasg 12709 tgrest 12710 txvalex 12795 txval 12796 ispsmet 12864 ismet 12885 isxmet 12886 xmetunirn 12899 blfvalps 12926 bj-vtoclgft 13491 djucllem 13516 bj-nvel 13614 |
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