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| Mirrors > Home > ILE Home > Th. List > elexd | Unicode version | ||
| Description: If a class is a member of another class, it is a set. (Contributed by Glauco Siliprandi, 11-Oct-2020.) |
| Ref | Expression |
|---|---|
| elexd.1 |
|
| Ref | Expression |
|---|---|
| elexd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elexd.1 |
. 2
| |
| 2 | elex 2833 |
. 2
| |
| 3 | 1, 2 | syl 14 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-ext 2220 |
| This proof depends on definitions: df-bi 117 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-v 2823 |
| This theorem is used by: ifexd 4630 dmmptd 5514 relndmfv 5728 mptsuppd 6496 suppssfvg 6503 tfr1onlemsucfn 6611 tfrcllemsucfn 6624 frecrdg 6679 mapsnend 7099 mapunen 7151 unsnfidcel 7228 fnfi 7250 caseinl 7432 caseinr 7433 omniwomnimkv 7508 nninfdcinf 7512 acfun 7564 seq3val 10912 seqvalcd 10913 seqf1oglem2 10972 seqf1og 10973 hashennn 11235 wrdexg 11331 lswex 11372 ccatw2s1leng 11422 ccat2s1fvwd 11431 swrdspsleq 11455 cats1un 11509 cats1fvd 11554 s3fv0g 11579 s3fv1g 11580 s3fv2g 11581 s1s3d 11583 s1s4d 11584 s1s5d 11585 s1s6d 11586 s1s7d 11587 s2s2d 11588 s4s2d 11589 s4s3d 11590 s3s4d 11591 s2s5d 11592 s5s2d 11593 s4s4d 11594 lcmval 12860 ballotfilemsv 13305 ennnfonelemp1 13349 isstruct2r 13415 strnfvnd 13424 strfvssn 13426 strslfv2d 13447 setsslid 13455 basmex 13464 basmexd 13465 ressbas2d 13475 ressval3d 13479 imasival 13680 imasbas 13681 imasplusg 13682 imasmulr 13683 imasaddfn 13691 imasaddval 13692 imasaddf 13693 imasmulfn 13694 imasmulval 13695 imasmulf 13696 qusval 13697 qusaddflemg 13708 qusaddval 13709 qusaddf 13710 qusmulval 13711 qusmulf 13712 xpsfrnel 13718 ismgmn0 13731 gzsumvalx 13762 gzsumfzval 13764 gzsumval2 13767 ress0g 13809 ismhm 13821 mhmex 13822 0mhm 13846 qusgrp2 13969 mulgval 13978 mulgfng 13980 mulg1 13985 mulgnnp1 13986 mulgnndir 14007 issubg2m 14045 1nsgtrivd 14075 eqgval 14079 eqgen 14083 gsumvalfi 14236 prdsex 14263 prdsval 14264 prdsbaslemss 14265 prdssgrpd 14282 prdsidlem 14284 prdsmndd 14285 prds0g 14286 prdsgrpd 14288 prdsinvgd 14289 xpsval 14292 mgpplusg 14313 mgpbas 14316 rngpropd 14345 qusrng 14348 ringidval 14356 issrg 14360 ringidss 14425 ringpropd 14434 qusring2 14462 opprringb 14477 dvdsrvald 14491 dvdsrd 14492 isunitd 14504 invrfvald 14520 dvrfvald 14531 rdivmuldivd 14542 invrpropdg 14547 isrim0 14559 rhmunitinv 14576 subrgintm 14642 rrgmex 14660 aprval 14682 aprprop 14692 lssmex 14783 islss3 14807 sraval 14865 sralemg 14866 srascag 14870 sravscag 14871 sraipg 14872 sraex 14874 lidlmex 14903 lidlrsppropdg 14923 2idlmex 14929 qusrhm 14956 zrhval 15043 asclfval 15112 psrval 15141 psrbasg 15157 psrplusgg 15161 psraddcl 15163 psrmulrg 15165 psrmulclfilem 15168 psr0cl 15170 psr0lid 15171 psrnegcl 15172 psrlinv 15173 psrgrp 15174 psr1clfi 15177 psrlidmfi 15178 mplsubgfilemcl 15189 istopon 15213 istps 15232 tgclb 15265 restbasg 15368 restco 15374 lmfval 15393 cnfval 15394 cnpfval 15395 cnpval 15398 txcnp 15471 txrest 15476 ismet2 15554 xmetpsmet 15569 mopnval 15642 comet 15699 reldvg 15879 dvmptclx 15918 lgseisenlem2 16369 1vgrex 16440 p1evtxdeqfilem 16731 p1evtxdeqfi 16732 p1evtxdp1fi 16733 upgriswlkdc 16780 eupth2lem3fi 16896 eupth2lembfi 16897 |
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