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| Mirrors > Home > ILE Home > Th. List > elexi | Unicode version | ||
| Description: If a class is a member of another class, it is a set. (Contributed by NM, 11-Jun-1994.) |
| Ref | Expression |
|---|---|
| elisseti.1 |
|
| Ref | Expression |
|---|---|
| elexi |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elisseti.1 |
. 2
| |
| 2 | elex 2815 |
. 2
| |
| 3 | 1, 2 | ax-mp 5 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1496 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-ext 2213 |
| This theorem depends on definitions: df-bi 117 df-sb 1811 df-clab 2218 df-cleq 2224 df-clel 2227 df-v 2805 |
| This theorem is referenced by: elpwi2 4253 onunisuci 4535 ordsoexmid 4666 funopdmsn 5842 1oex 6633 fnoei 6663 oeiexg 6664 endisj 7051 unfiexmid 7153 snexxph 7192 djuex 7302 0ct 7366 nninfex 7380 infnninfOLD 7384 nnnninf 7385 ctssexmid 7409 nninfdcinf 7430 nninfwlporlem 7432 nninfwlpoimlemg 7434 pm54.43 7455 pw1ne3 7508 3nsssucpw1 7514 2omotaplemst 7537 prarloclemarch2 7699 opelreal 8107 elreal 8108 elreal2 8110 eqresr 8116 c0ex 8233 1ex 8234 pnfex 8292 sup3exmid 9196 2ex 9274 3ex 9278 elxr 10072 xnn0nnen 10762 lsw0 11227 setsslid 13213 setsslnid 13214 bassetsnn 13219 prdsex 13432 rmodislmod 14447 fnpsr 14763 lgsdir2lem3 15849 funvtxval0d 15974 funvtxvalg 15977 funiedgvalg 15978 struct2slots2dom 15979 structiedg0val 15981 edgstruct 16005 konigsbergvtx 16423 konigsbergiedg 16424 konigsberglem1 16429 konigsberglem2 16430 konigsberglem3 16431 konigsberglem5 16433 konigsberg 16434 3dom 16708 2omapen 16716 subctctexmid 16722 0nninf 16730 nninffeq 16746 |
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