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| Mirrors > Home > ILE Home > Th. List > znnen | Unicode version | ||
| Description: The set of integers and the set of positive integers are equinumerous. Corollary 8.1.23 of [AczelRathjen], p. 75. (Contributed by NM, 31-Jul-2004.) |
| Ref | Expression |
|---|---|
| znnen |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | unrab 3504 |
. . 3
| |
| 2 | nnssz 9640 |
. . . . . 6
| |
| 3 | dfss1 3435 |
. . . . . 6
| |
| 4 | 2, 3 | mpbi 145 |
. . . . 5
|
| 5 | dfin5 3227 |
. . . . 5
| |
| 6 | 4, 5 | eqtr3i 2261 |
. . . 4
|
| 7 | 6 | uneq1i 3379 |
. . 3
|
| 8 | rabid2 2729 |
. . . 4
| |
| 9 | elznn 9639 |
. . . . 5
| |
| 10 | 9 | simprbi 275 |
. . . 4
|
| 11 | 8, 10 | mprgbir 2608 |
. . 3
|
| 12 | 1, 7, 11 | 3eqtr4ri 2270 |
. 2
|
| 13 | nnex 9289 |
. . . 4
| |
| 14 | 13 | enref 7041 |
. . 3
|
| 15 | zex 9632 |
. . . . . 6
| |
| 16 | 15 | rabex 4275 |
. . . . 5
|
| 17 | nn0ex 9548 |
. . . . 5
| |
| 18 | negeq 8509 |
. . . . . . . 8
| |
| 19 | 18 | eleq1d 2307 |
. . . . . . 7
|
| 20 | 19 | elrab 2982 |
. . . . . 6
|
| 21 | 20 | simprbi 275 |
. . . . 5
|
| 22 | negeq 8509 |
. . . . . . 7
| |
| 23 | 22 | eleq1d 2307 |
. . . . . 6
|
| 24 | nn0negz 9657 |
. . . . . 6
| |
| 25 | nn0cn 9552 |
. . . . . . . . 9
| |
| 26 | 25 | negnegd 8618 |
. . . . . . . 8
|
| 27 | 26 | eleq1d 2307 |
. . . . . . 7
|
| 28 | 27 | ibir 177 |
. . . . . 6
|
| 29 | 23, 24, 28 | elrabd 2984 |
. . . . 5
|
| 30 | elrabi 2979 |
. . . . . . . 8
| |
| 31 | 30 | adantr 276 |
. . . . . . 7
|
| 32 | 31 | zcnd 9748 |
. . . . . 6
|
| 33 | 25 | adantl 277 |
. . . . . 6
|
| 34 | negcon2 8569 |
. . . . . 6
| |
| 35 | 32, 33, 34 | syl2anc 415 |
. . . . 5
|
| 36 | 16, 17, 21, 29, 35 | en3i 7047 |
. . . 4
|
| 37 | nn0ennn 10848 |
. . . 4
| |
| 38 | 36, 37 | entri 7063 |
. . 3
|
| 39 | inrab2 3506 |
. . . 4
| |
| 40 | incom 3421 |
. . . 4
| |
| 41 | rabeq0 3552 |
. . . . 5
| |
| 42 | 0red 8317 |
. . . . . . . 8
| |
| 43 | simpl 109 |
. . . . . . . . 9
| |
| 44 | 43 | nnred 9296 |
. . . . . . . 8
|
| 45 | nngt0 9308 |
. . . . . . . . 9
| |
| 46 | 45 | adantr 276 |
. . . . . . . 8
|
| 47 | nn0ge0 9567 |
. . . . . . . . . 10
| |
| 48 | 47 | adantl 277 |
. . . . . . . . 9
|
| 49 | 44 | le0neg1d 8835 |
. . . . . . . . 9
|
| 50 | 48, 49 | mpbird 167 |
. . . . . . . 8
|
| 51 | 42, 44, 42, 46, 50 | ltletrd 8741 |
. . . . . . 7
|
| 52 | 42 | ltnrd 8427 |
. . . . . . 7
|
| 53 | 51, 52 | pm2.65da 671 |
. . . . . 6
|
| 54 | 53, 4 | eleq2s 2333 |
. . . . 5
|
| 55 | 41, 54 | mprgbir 2608 |
. . . 4
|
| 56 | 39, 40, 55 | 3eqtr3i 2267 |
. . 3
|
| 57 | unennn 13266 |
. . 3
| |
| 58 | 14, 38, 56, 57 | mp3an 1378 |
. 2
|
| 59 | 12, 58 | eqbrtri 4146 |
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-in1 623 ax-in2 624 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 4244 ax-pow 4306 ax-pr 4341 ax-un 4573 ax-setind 4679 ax-cnex 8260 ax-resscn 8261 ax-1cn 8262 ax-1re 8263 ax-icn 8264 ax-addcl 8265 ax-addrcl 8266 ax-mulcl 8267 ax-mulrcl 8268 ax-addcom 8269 ax-mulcom 8270 ax-addass 8271 ax-mulass 8272 ax-distr 8273 ax-i2m1 8274 ax-0lt1 8275 ax-1rid 8276 ax-0id 8277 ax-rnegex 8278 ax-precex 8279 ax-cnre 8280 ax-pre-ltirr 8281 ax-pre-ltwlin 8282 ax-pre-lttrn 8283 ax-pre-apti 8284 ax-pre-ltadd 8285 ax-pre-mulgt0 8286 ax-pre-mulext 8287 ax-arch 8288 |
| This theorem depends on definitions: df-bi 117 df-dc 847 df-3or 1010 df-3an 1011 df-tru 1405 df-fal 1408 df-xor 1425 df-nf 1514 df-sb 1816 df-eu 2089 df-mo 2090 df-clab 2225 df-cleq 2231 df-clel 2234 df-nfc 2381 df-ne 2421 df-nel 2516 df-ral 2533 df-rex 2534 df-reu 2535 df-rmo 2536 df-rab 2537 df-v 2823 df-sbc 3052 df-csb 3148 df-dif 3222 df-un 3224 df-in 3226 df-ss 3233 df-nul 3521 df-pw 3687 df-sn 3711 df-pr 3712 df-op 3714 df-uni 3931 df-int 3966 df-iun 4009 df-br 4126 df-opab 4188 df-mpt 4189 df-id 4433 df-po 4436 df-iso 4437 df-xp 4775 df-rel 4776 df-cnv 4777 df-co 4778 df-dm 4779 df-rn 4780 df-res 4781 df-ima 4782 df-iota 5332 df-fun 5374 df-fn 5375 df-f 5376 df-f1 5377 df-fo 5378 df-f1o 5379 df-fv 5380 df-riota 6028 df-ov 6078 df-oprab 6079 df-mpo 6080 df-1st 6364 df-2nd 6365 df-er 6797 df-en 7013 df-pnf 8352 df-mnf 8353 df-xr 8354 df-ltxr 8355 df-le 8356 df-sub 8489 df-neg 8490 df-reap 8893 df-ap 8900 df-div 8993 df-inn 9284 df-2 9342 df-n0 9543 df-z 9624 df-q 9999 df-rp 10034 df-fl 10683 df-mod 10738 df-dvds 12533 |
| This theorem is referenced by: qnnen 13300 |
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