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| Mirrors > Home > ILE Home > Th. List > c0ex | Unicode version | ||
| Description: 0 is a set (common case). (Contributed by David A. Wheeler, 7-Jul-2016.) |
| Ref | Expression |
|---|---|
| c0ex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | 0cn 8324 |
. 2
| |
| 2 | 1 | elexi 2834 |
1
|
| Colors of variables: wff set class |
| This proof depends on syntax axioms:
|
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-5 1500 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-ext 2220 ax-1cn 8278 ax-icn 8280 ax-addcl 8281 ax-mulcl 8283 ax-i2m1 8290 |
| This proof depends on definitions: df-bi 117 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-v 2823 |
| This theorem is used by: ofsubeq0 9300 elnn0 9576 nn0ex 9580 un0mulcl 9608 fcdmnn0supp 9626 fcdmnn0fsupp 9627 fcdmnn0suppg 9628 fcdmnn0fsuppg 9629 nn0ssz 9673 nn0ind-raph 9774 ser0f 10992 fser0const 10993 facnn 11187 fac0 11188 prhash2ex 11272 wrdexb 11338 s1rn 11408 eqs1 11418 iserge0 12134 sum0 12180 isumz 12181 fisumss 12184 0bits 12751 bezoutlemmain 12800 lcmval 12866 psrlidmfi 15199 dvef 15953 plyval 15958 elply2 15961 plyss 15964 elplyd 15967 ply1term 15969 plymullem 15976 plyco 15985 plycj 15987 uspgr1ewopdc 16690 usgr2v1e2w 16692 wlkl1loop 16804 2wlklem 16822 clwwlkn2 16867 eulerpathprum 16926 konigsberglem4 16937 konigsberglem5 16938 2o01f 17229 iswomni0 17308 |
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