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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 9381 |
. 2
| |
| 2 | nnex 9127 |
. . 3
| |
| 3 | c0ex 8151 |
. . . 4
| |
| 4 | 3 | snex 4269 |
. . 3
|
| 5 | 2, 4 | unex 4532 |
. 2
|
| 6 | 1, 5 | eqeltri 2302 |
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 714 ax-5 1493 ax-7 1494 ax-gen 1495 ax-ie1 1539 ax-ie2 1540 ax-8 1550 ax-10 1551 ax-11 1552 ax-i12 1553 ax-bndl 1555 ax-4 1556 ax-17 1572 ax-i9 1576 ax-ial 1580 ax-i5r 1581 ax-13 2202 ax-14 2203 ax-ext 2211 ax-sep 4202 ax-pow 4258 ax-pr 4293 ax-un 4524 ax-cnex 8101 ax-resscn 8102 ax-1cn 8103 ax-1re 8104 ax-icn 8105 ax-addcl 8106 ax-addrcl 8107 ax-mulcl 8108 ax-i2m1 8115 |
| This theorem depends on definitions: df-bi 117 df-tru 1398 df-nf 1507 df-sb 1809 df-clab 2216 df-cleq 2222 df-clel 2225 df-nfc 2361 df-ral 2513 df-rex 2514 df-v 2801 df-un 3201 df-in 3203 df-ss 3210 df-pw 3651 df-sn 3672 df-pr 3673 df-uni 3889 df-int 3924 df-inn 9122 df-n0 9381 |
| This theorem is referenced by: nn0ennn 10667 nnenom 10668 uzennn 10670 xnn0nnen 10671 wrdexg 11095 expcnvap0 12029 expcnvre 12030 expcnv 12031 geolim 12038 mertenslem2 12063 eftlub 12217 bitsfval 12469 bitsf 12473 1arith 12906 znnen 12985 psrval 14646 fnpsr 14647 psrbag 14649 psrbasg 14654 psrelbas 14655 psrplusgg 14658 psraddcl 14660 psr0cl 14661 psr0lid 14662 psrnegcl 14663 psrlinv 14664 psrgrp 14665 psr1clfi 14668 mplsubgfilemm 14678 mplsubgfilemcl 14679 plyval 15422 elply2 15425 plyf 15427 elplyr 15430 plyaddlem1 15437 plyaddlem 15439 plymullem 15440 plyco 15449 plycj 15451 plyrecj 15453 |
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