| Intuitionistic Logic Explorer |
< Previous
Next >
Nearby theorems |
||
| Mirrors > Home > ILE Home > Th. List > nn0ex | GIF version | ||
| Description: The set of nonnegative integers exists. (Contributed by NM, 18-Jul-2004.) |
| Ref | Expression |
|---|---|
| nn0ex | ⊢ ℕ0 ∈ V |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-n0 9391 | . 2 ⊢ ℕ0 = (ℕ ∪ {0}) | |
| 2 | nnex 9137 | . . 3 ⊢ ℕ ∈ V | |
| 3 | c0ex 8161 | . . . 4 ⊢ 0 ∈ V | |
| 4 | 3 | snex 4271 | . . 3 ⊢ {0} ∈ V |
| 5 | 2, 4 | unex 4534 | . 2 ⊢ (ℕ ∪ {0}) ∈ V |
| 6 | 1, 5 | eqeltri 2302 | 1 ⊢ ℕ0 ∈ V |
| Colors of variables: wff set class |
| Syntax hints: ∈ wcel 2200 Vcvv 2800 ∪ cun 3196 {csn 3667 0cc0 8020 ℕcn 9131 ℕ0cn0 9390 |
| 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 4203 ax-pow 4260 ax-pr 4295 ax-un 4526 ax-cnex 8111 ax-resscn 8112 ax-1cn 8113 ax-1re 8114 ax-icn 8115 ax-addcl 8116 ax-addrcl 8117 ax-mulcl 8118 ax-i2m1 8125 |
| 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 2802 df-un 3202 df-in 3204 df-ss 3211 df-pw 3652 df-sn 3673 df-pr 3674 df-uni 3890 df-int 3925 df-inn 9132 df-n0 9391 |
| This theorem is referenced by: nn0ennn 10683 nnenom 10684 uzennn 10686 xnn0nnen 10687 wrdexg 11111 expcnvap0 12050 expcnvre 12051 expcnv 12052 geolim 12059 mertenslem2 12084 eftlub 12238 bitsfval 12490 bitsf 12494 1arith 12927 znnen 13006 psrval 14667 fnpsr 14668 psrbag 14670 psrbasg 14675 psrelbas 14676 psrplusgg 14679 psraddcl 14681 psr0cl 14682 psr0lid 14683 psrnegcl 14684 psrlinv 14685 psrgrp 14686 psr1clfi 14689 mplsubgfilemm 14699 mplsubgfilemcl 14700 plyval 15443 elply2 15446 plyf 15448 elplyr 15451 plyaddlem1 15458 plyaddlem 15460 plymullem 15461 plyco 15470 plycj 15472 plyrecj 15474 clwwlknonmpo 16213 |
| Copyright terms: Public domain | W3C validator |