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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 fcdmnn0suppg 9627 nn0ssz 9671 nn0ind-raph 9773 ser0f 10991 fser0const 10992 facnn 11186 fac0 11187 prhash2ex 11271 wrdexb 11337 s1rn 11407 eqs1 11417 iserge0 12133 sum0 12179 isumz 12180 fisumss 12183 0bits 12750 bezoutlemmain 12799 lcmval 12865 psrlidmfi 15208 mvrf1fi 15219 dvef 15970 plyval 15975 elply2 15978 plyss 15981 elplyd 15984 ply1term 15986 plymullem 15993 plyco 16002 plycj 16004 uspgr1ewopdc 16707 usgr2v1e2w 16709 wlkl1loop 16821 2wlklem 16839 clwwlkn2 16884 eulerpathprum 16943 konigsberglem4 16954 konigsberglem5 16955 2o01f 17246 iswomni0 17325 |
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