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| Mirrors > Home > ILE Home > Th. List > elexi | GIF 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 | ⊢ 𝐴 ∈ 𝐵 |
| Ref | Expression |
|---|---|
| elexi | ⊢ 𝐴 ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | elisseti.1 | . 2 ⊢ 𝐴 ∈ 𝐵 | |
| 2 | elex 2815 | . 2 ⊢ (𝐴 ∈ 𝐵 → 𝐴 ∈ V) | |
| 3 | 1, 2 | ax-mp 5 | 1 ⊢ 𝐴 ∈ V |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2202 Vcvv 2803 |
| 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 7285 0ct 7349 nninfex 7363 infnninfOLD 7367 nnnninf 7368 ctssexmid 7392 nninfdcinf 7413 nninfwlporlem 7415 nninfwlpoimlemg 7417 pm54.43 7438 pw1ne3 7491 3nsssucpw1 7497 2omotaplemst 7520 prarloclemarch2 7682 opelreal 8090 elreal 8091 elreal2 8093 eqresr 8099 c0ex 8216 1ex 8217 pnfex 8275 sup3exmid 9179 2ex 9257 3ex 9261 elxr 10055 xnn0nnen 10745 lsw0 11210 setsslid 13196 setsslnid 13197 bassetsnn 13202 prdsex 13415 rmodislmod 14430 fnpsr 14746 lgsdir2lem3 15832 funvtxval0d 15957 funvtxvalg 15960 funiedgvalg 15961 struct2slots2dom 15962 structiedg0val 15964 edgstruct 15988 konigsbergvtx 16406 konigsbergiedg 16407 konigsberglem1 16412 konigsberglem2 16413 konigsberglem3 16414 konigsberglem5 16416 konigsberg 16417 3dom 16691 2omapen 16699 subctctexmid 16705 0nninf 16713 nninffeq 16729 |
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