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| Description: The power set of the empty set is a set. |
| Ref | Expression |
|---|---|
| p0ex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | snex 2756 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: pp0ex 2777 dtru 2778 zfpair 2783 snsn0non 3131 opthprc 3227 fvclex 3862 ensn1 4430 en1 4432 2dom 4433 map1 4436 endisj 4443 pw2en 4452 1sdom2 4531 unxpdom2 4856 sucxpdom 4857 cdavalt 4931 uncdadom 4933 cdaassen 4942 xpcdaen 4943 mapcdaen 4944 cdadom1 4945 axpowndlem3 4963 infxpidmlem9 7561 sn0top 7644 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 964 ax-gen 965 ax-8 966 ax-10 968 ax-11 969 ax-12 970 ax-13 971 ax-14 972 ax-17 973 ax-4 975 ax-5o 977 ax-6o 980 ax-9o 1125 ax-10o 1142 ax-16 1212 ax-11o 1220 ax-ext 1462 ax-sep 2708 ax-pow 2748 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 983 df-sb 1174 df-eu 1384 df-mo 1385 df-clab 1467 df-cleq 1472 df-clel 1475 df-ne 1590 df-v 1815 df-dif 2052 df-in 2054 df-ss 2056 df-nul 2284 df-pw 2406 df-sn 2416 |