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| Description: The power set of the empty set is a set. |
| Ref | Expression |
|---|---|
| p0ex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | snex 2806 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: pp0ex 2827 dtru 2828 zfpair 2833 snsn0non 3182 opthprc 3278 fvclex 3913 ensn1 4485 en1 4487 2dom 4488 map1 4491 endisj 4500 pw2en 4509 1sdom2 4590 unxpdom2 4910 sucxpdom 4911 cdaval 4984 uncdadom 4986 cdaassen 4995 xpcdaen 4996 mapcdaen 4997 cdadom1 4998 axpowndlem3 5016 infxpidmlem9 7652 sn0top 7734 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1003 ax-gen 1004 ax-8 1005 ax-10 1007 ax-11 1008 ax-12 1009 ax-13 1010 ax-14 1011 ax-17 1012 ax-4 1014 ax-5o 1016 ax-6o 1019 ax-9o 1164 ax-10o 1182 ax-16 1252 ax-11o 1260 ax-ext 1504 ax-sep 2758 ax-pow 2798 |
| This theorem depends on definitions: df-bi 154 df-or 231 df-an 232 df-ex 1022 df-sb 1214 df-eu 1424 df-mo 1425 df-clab 1510 df-cleq 1515 df-clel 1518 df-ne 1634 df-v 1859 df-dif 2100 df-in 2102 df-ss 2104 df-nul 2332 df-pw 2454 df-sn 2464 |