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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 9576 |
. 2
| |
| 2 | nnex 9320 |
. . 3
| |
| 3 | c0ex 8327 |
. . . 4
| |
| 4 | 3 | snex 4324 |
. . 3
|
| 5 | 2, 4 | unex 4589 |
. 2
|
| 6 | 1, 5 | eqeltri 2311 |
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-io 721 ax-5 1500 ax-7 1501 ax-gen 1502 ax-ie1 1546 ax-ie2 1547 ax-8 1557 ax-10 1558 ax-11 1559 ax-i12 1560 ax-bndl 1562 ax-4 1563 ax-17 1579 ax-i9 1583 ax-ial 1587 ax-i5r 1588 ax-14 2212 ax-ext 2220 ax-sep 4251 ax-pow 4313 ax-pr 4348 ax-un 4580 ax-cnex 8277 ax-resscn 8278 ax-1cn 8279 ax-1re 8280 ax-icn 8281 ax-addcl 8282 ax-addrcl 8283 ax-mulcl 8284 ax-i2m1 8291 |
| This proof depends on definitions: df-bi 117 df-tru 1405 df-nf 1514 df-sb 1816 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ral 2533 df-rex 2534 df-v 2823 df-un 3224 df-in 3226 df-ss 3233 df-pw 3690 df-sn 3715 df-pr 3716 df-uni 3936 df-int 3971 df-inn 9315 df-n0 9576 |
| This theorem is used by: nn0ennn 10892 nnenom 10893 uzennn 10895 xnn0nnen 10896 wrdexg 11338 expcnvap0 12295 expcnvre 12296 expcnv 12297 geolim 12304 mertenslem2 12329 eftlub 12483 bitsfval 12735 bitsf 12739 1arith 13176 znnen 13348 psrval 15162 fnpsr 15163 psrbag 15165 snifpsrbagfi 15170 psrbagaddclfi 15175 psrbaglefifi 15177 psrbasg 15183 psrelbas 15184 psrplusgg 15187 psraddcl 15189 psrmulrg 15191 psrmulfval 15192 psrmulclfilem 15194 psr0cl 15196 psr0lid 15197 psrnegcl 15198 psrlinv 15199 psrgrp 15200 psr1clfi 15203 psrdifi 15207 psrdirfi 15208 mvrval 15211 mvrffi 15214 mplsubgfilemm 15226 mplsubgfilemcl 15227 plyval 15970 elply2 15973 plyf 15975 elplyr 15978 plyaddlem1 15985 plyaddlem 15987 plymullem 15988 plyco 15997 plycj 15999 plyrecj 16001 clwwlknonmpo 16886 depindlem1 16964 depindlem2 16965 |
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