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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 1596 | . 2 | |
2 | df-clel 2133 | . 2 | |
3 | isset 2687 | . 2 | |
4 | 1, 2, 3 | 3imtr4i 200 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wceq 1331 wex 1468 wcel 1480 cvv 2681 |
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 1423 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-4 1487 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-ext 2119 |
This theorem depends on definitions: df-bi 116 df-sb 1736 df-clab 2124 df-cleq 2130 df-clel 2133 df-v 2683 |
This theorem is referenced by: elexi 2693 elexd 2694 elisset 2695 vtoclgft 2731 vtoclgf 2739 vtoclg1f 2740 vtocl2gf 2743 vtocl3gf 2744 spcimgft 2757 spcimegft 2759 elab4g 2828 elrabf 2833 mob 2861 sbcex 2912 sbcel1v 2966 sbcabel 2985 csbcomg 3020 csbvarg 3025 csbiebt 3034 csbnestgf 3047 csbidmg 3051 sbcco3g 3052 csbco3g 3053 eldif 3075 ssv 3114 elun 3212 elin 3254 elpwb 3515 snidb 3550 dfopg 3698 eluni 3734 eliun 3812 csbexga 4051 nvel 4056 class2seteq 4082 axpweq 4090 snelpwi 4129 opexg 4145 elopab 4175 epelg 4207 elon2 4293 unexg 4359 reuhypd 4387 sucexg 4409 sucelon 4414 onsucelsucr 4419 sucunielr 4421 en2lp 4464 peano2 4504 peano2b 4523 opelvvg 4583 opeliunxp 4589 opeliunxp2 4674 ideqg 4685 elrnmptg 4786 imasng 4899 iniseg 4906 opswapg 5020 elxp4 5021 elxp5 5022 dmmptg 5031 iota2 5109 fnmpt 5244 fvexg 5433 fvelimab 5470 mptfvex 5499 fvmptdf 5501 fvmptdv2 5503 mpteqb 5504 fvmptt 5505 fvmptf 5506 fvopab6 5510 fsn2 5587 fmptpr 5605 eloprabga 5851 ovmpos 5887 ov2gf 5888 ovmpodxf 5889 ovmpox 5892 ovmpoga 5893 ovmpodf 5895 ovi3 5900 ovelrn 5912 suppssfv 5971 suppssov1 5972 offval3 6025 1stexg 6058 2ndexg 6059 elxp6 6060 elxp7 6061 releldm2 6076 fnmpo 6093 mpofvex 6094 mpoexg 6102 opeliunxp2f 6128 brtpos2 6141 rdgtfr 6264 rdgruledefgg 6265 frec0g 6287 sucinc2 6335 nntri3or 6382 relelec 6462 ecdmn0m 6464 mapvalg 6545 pmvalg 6546 elpmg 6551 elixp2 6589 mptelixpg 6621 elixpsn 6622 map1 6699 mapdom1g 6734 mapxpen 6735 fival 6851 elfi2 6853 djulclr 6927 djurclr 6928 djulcl 6929 djurcl 6930 djulclb 6933 inl11 6943 djuss 6948 1stinl 6952 2ndinl 6953 1stinr 6954 2ndinr 6955 ismkvnex 7022 elinp 7275 addnqprlemfl 7360 addnqprlemfu 7361 mulnqprlemfl 7376 mulnqprlemfu 7377 recexprlemell 7423 recexprlemelu 7424 shftfvalg 10583 clim 11043 climmpt 11062 climshft2 11068 isstruct2r 11959 slotex 11975 setsvalg 11978 setsfun0 11984 setscom 11988 restval 12115 topnvalg 12121 toponsspwpwg 12178 tgval 12207 eltg 12210 eltg2 12211 restbasg 12326 tgrest 12327 txvalex 12412 txval 12413 ispsmet 12481 ismet 12502 isxmet 12503 xmetunirn 12516 blfvalps 12543 bj-vtoclgft 12971 djucllem 12996 bj-nvel 13084 |
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