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| Mirrors > Home > ILE Home > Th. List > nn0ex | Unicode version | ||
| Description: The set of nonnegative integers exists. (Contributed by NM, 18-Jul-2004.) |
| Ref | Expression |
|---|---|
| nn0ex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-n0 9267 |
. 2
| |
| 2 | nnex 9013 |
. . 3
| |
| 3 | c0ex 8037 |
. . . 4
| |
| 4 | 3 | snex 4219 |
. . 3
|
| 5 | 2, 4 | unex 4477 |
. 2
|
| 6 | 1, 5 | eqeltri 2269 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 106 ax-ia2 107 ax-ia3 108 ax-io 710 ax-5 1461 ax-7 1462 ax-gen 1463 ax-ie1 1507 ax-ie2 1508 ax-8 1518 ax-10 1519 ax-11 1520 ax-i12 1521 ax-bndl 1523 ax-4 1524 ax-17 1540 ax-i9 1544 ax-ial 1548 ax-i5r 1549 ax-13 2169 ax-14 2170 ax-ext 2178 ax-sep 4152 ax-pow 4208 ax-pr 4243 ax-un 4469 ax-cnex 7987 ax-resscn 7988 ax-1cn 7989 ax-1re 7990 ax-icn 7991 ax-addcl 7992 ax-addrcl 7993 ax-mulcl 7994 ax-i2m1 8001 |
| This theorem depends on definitions: df-bi 117 df-tru 1367 df-nf 1475 df-sb 1777 df-clab 2183 df-cleq 2189 df-clel 2192 df-nfc 2328 df-ral 2480 df-rex 2481 df-v 2765 df-un 3161 df-in 3163 df-ss 3170 df-pw 3608 df-sn 3629 df-pr 3630 df-uni 3841 df-int 3876 df-inn 9008 df-n0 9267 |
| This theorem is referenced by: nn0ennn 10542 nnenom 10543 uzennn 10545 xnn0nnen 10546 wrdexg 10963 expcnvap0 11684 expcnvre 11685 expcnv 11686 geolim 11693 mertenslem2 11718 eftlub 11872 bitsfval 12124 bitsf 12128 1arith 12561 znnen 12640 psrval 14296 fnpsr 14297 psrbag 14299 psrbasg 14303 psrelbas 14304 psrplusgg 14306 psraddcl 14308 psr0cl 14309 psr0lid 14310 psrnegcl 14311 psrlinv 14312 psrgrp 14313 psr1clfi 14316 plyval 15052 elply2 15055 plyf 15057 elplyr 15060 plyaddlem1 15067 plyaddlem 15069 plymullem 15070 plyco 15079 plycj 15081 plyrecj 15083 |
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