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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 2827 |
. 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 2216 |
| This theorem depends on definitions: df-bi 117 df-sb 1812 df-clab 2221 df-cleq 2227 df-clel 2230 df-v 2817 |
| This theorem is referenced by: elpwi2 4272 onunisuci 4555 ordsoexmid 4686 funopdmsn 5866 1oex 6657 fnoei 6687 oeiexg 6688 endisj 7077 unfiexmid 7180 snexxph 7222 2omapen 7272 djuex 7336 0ct 7400 nninfex 7414 infnninfOLD 7418 nnnninf 7419 ctssexmid 7443 nninfdcinf 7464 nninfwlporlem 7466 nninfwlpoimlemg 7468 pm54.43 7489 pw1ne3 7542 3nsssucpw1 7548 2omotaplemst 7574 prarloclemarch2 7736 opelreal 8144 elreal 8145 elreal2 8147 eqresr 8153 c0ex 8270 1ex 8271 pnfex 8329 sup3exmid 9233 2ex 9311 3ex 9315 elxr 10112 xnn0nnen 10803 lsw0 11276 ballotfilem2 13149 setsslid 13280 setsslnid 13281 bassetsnn 13286 prdsex 13499 rmodislmod 14516 fnpsr 14832 lgsdir2lem3 15920 funvtxval0d 16045 funvtxvalg 16048 funiedgvalg 16049 struct2slots2dom 16050 structiedg0val 16052 edgstruct 16076 konigsbergvtx 16494 konigsbergiedg 16495 konigsberglem1 16500 konigsberglem2 16501 konigsberglem3 16502 konigsberglem5 16504 konigsberg 16505 3dom 16779 subctctexmid 16791 0nninf 16799 nninffeq 16815 |
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