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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 2814 |
. 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 1495 ax-gen 1497 ax-ie1 1541 ax-ie2 1542 ax-8 1552 ax-4 1558 ax-17 1574 ax-i9 1578 ax-ial 1582 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 2804 |
| This theorem is referenced by: elpwi2 4248 onunisuci 4529 ordsoexmid 4660 funopdmsn 5834 1oex 6590 fnoei 6620 oeiexg 6621 endisj 7008 unfiexmid 7110 snexxph 7149 djuex 7242 0ct 7306 nninfex 7320 infnninfOLD 7324 nnnninf 7325 ctssexmid 7349 nninfdcinf 7370 nninfwlporlem 7372 nninfwlpoimlemg 7374 pm54.43 7395 pw1ne3 7448 3nsssucpw1 7454 2omotaplemst 7477 prarloclemarch2 7639 opelreal 8047 elreal 8048 elreal2 8050 eqresr 8056 c0ex 8173 1ex 8174 pnfex 8233 sup3exmid 9137 2ex 9215 3ex 9219 elxr 10011 xnn0nnen 10700 lsw0 11165 setsslid 13151 setsslnid 13152 bassetsnn 13157 prdsex 13370 rmodislmod 14384 fnpsr 14700 lgsdir2lem3 15778 funvtxval0d 15903 funvtxvalg 15906 funiedgvalg 15907 struct2slots2dom 15908 structiedg0val 15910 edgstruct 15934 konigsbergvtx 16352 konigsbergiedg 16353 konigsberglem1 16358 konigsberglem2 16359 konigsberglem3 16360 konigsberglem5 16362 konigsberg 16363 3dom 16638 2omapen 16646 subctctexmid 16652 0nninf 16657 nninffeq 16673 |
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