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| Description: The power set of the empty set is a set. |
| Ref | Expression |
|---|---|
| p0ex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | snex 2745 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: pp0ex 2766 dtru 2767 zfpair 2772 snsn0non 3120 opthprc 3216 fvclex 3847 ensn1 4411 en1 4413 2dom 4414 map1 4417 endisj 4423 pw2en 4432 1sdom2 4511 unxpdom2 4825 sucxpdom 4826 cdavalt 4899 uncdadom 4901 cdaassen 4910 xpcdaen 4911 mapcdaen 4912 cdadom1 4913 axpowndlem3 4931 infxpidmlem9 7511 sn0top 7597 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-sep 2698 ax-pow 2737 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-v 1808 df-dif 2045 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 |