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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 3496 |
. . 3
| |
| 2 | nnssz 9611 |
. . . . . 6
| |
| 3 | dfss1 3429 |
. . . . . 6
| |
| 4 | 2, 3 | mpbi 145 |
. . . . 5
|
| 5 | dfin5 3221 |
. . . . 5
| |
| 6 | 4, 5 | eqtr3i 2257 |
. . . 4
|
| 7 | 6 | uneq1i 3373 |
. . 3
|
| 8 | rabid2 2723 |
. . . 4
| |
| 9 | elznn 9610 |
. . . . 5
| |
| 10 | 9 | simprbi 275 |
. . . 4
|
| 11 | 8, 10 | mprgbir 2602 |
. . 3
|
| 12 | 1, 7, 11 | 3eqtr4ri 2266 |
. 2
|
| 13 | nnex 9260 |
. . . 4
| |
| 14 | 13 | enref 7017 |
. . 3
|
| 15 | zex 9603 |
. . . . . 6
| |
| 16 | 15 | rabex 4261 |
. . . . 5
|
| 17 | nn0ex 9519 |
. . . . 5
| |
| 18 | negeq 8482 |
. . . . . . . 8
| |
| 19 | 18 | eleq1d 2303 |
. . . . . . 7
|
| 20 | 19 | elrab 2976 |
. . . . . 6
|
| 21 | 20 | simprbi 275 |
. . . . 5
|
| 22 | negeq 8482 |
. . . . . . 7
| |
| 23 | 22 | eleq1d 2303 |
. . . . . 6
|
| 24 | nn0negz 9628 |
. . . . . 6
| |
| 25 | nn0cn 9523 |
. . . . . . . . 9
| |
| 26 | 25 | negnegd 8591 |
. . . . . . . 8
|
| 27 | 26 | eleq1d 2303 |
. . . . . . 7
|
| 28 | 27 | ibir 177 |
. . . . . 6
|
| 29 | 23, 24, 28 | elrabd 2978 |
. . . . 5
|
| 30 | elrabi 2973 |
. . . . . . . 8
| |
| 31 | 30 | adantr 276 |
. . . . . . 7
|
| 32 | 31 | zcnd 9719 |
. . . . . 6
|
| 33 | 25 | adantl 277 |
. . . . . 6
|
| 34 | negcon2 8542 |
. . . . . 6
| |
| 35 | 32, 33, 34 | syl2anc 411 |
. . . . 5
|
| 36 | 16, 17, 21, 29, 35 | en3i 7023 |
. . . 4
|
| 37 | nn0ennn 10819 |
. . . 4
| |
| 38 | 36, 37 | entri 7039 |
. . 3
|
| 39 | inrab2 3498 |
. . . 4
| |
| 40 | incom 3415 |
. . . 4
| |
| 41 | rabeq0 3542 |
. . . . 5
| |
| 42 | 0red 8291 |
. . . . . . . 8
| |
| 43 | simpl 109 |
. . . . . . . . 9
| |
| 44 | 43 | nnred 9267 |
. . . . . . . 8
|
| 45 | nngt0 9279 |
. . . . . . . . 9
| |
| 46 | 45 | adantr 276 |
. . . . . . . 8
|
| 47 | nn0ge0 9538 |
. . . . . . . . . 10
| |
| 48 | 47 | adantl 277 |
. . . . . . . . 9
|
| 49 | 44 | le0neg1d 8808 |
. . . . . . . . 9
|
| 50 | 48, 49 | mpbird 167 |
. . . . . . . 8
|
| 51 | 42, 44, 42, 46, 50 | ltletrd 8714 |
. . . . . . 7
|
| 52 | 42 | ltnrd 8401 |
. . . . . . 7
|
| 53 | 51, 52 | pm2.65da 667 |
. . . . . 6
|
| 54 | 53, 4 | eleq2s 2329 |
. . . . 5
|
| 55 | 41, 54 | mprgbir 2602 |
. . . 4
|
| 56 | 39, 40, 55 | 3eqtr3i 2263 |
. . 3
|
| 57 | unennn 13232 |
. . 3
| |
| 58 | 14, 38, 56, 57 | mp3an 1374 |
. 2
|
| 59 | 12, 58 | eqbrtri 4135 |
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 619 ax-in2 620 ax-io 717 ax-5 1496 ax-7 1497 ax-gen 1498 ax-ie1 1542 ax-ie2 1543 ax-8 1553 ax-10 1554 ax-11 1555 ax-i12 1556 ax-bndl 1558 ax-4 1559 ax-17 1575 ax-i9 1579 ax-ial 1583 ax-i5r 1584 ax-13 2207 ax-14 2208 ax-ext 2216 ax-sep 4233 ax-pow 4292 ax-pr 4327 ax-un 4559 ax-setind 4664 ax-cnex 8234 ax-resscn 8235 ax-1cn 8236 ax-1re 8237 ax-icn 8238 ax-addcl 8239 ax-addrcl 8240 ax-mulcl 8241 ax-mulrcl 8242 ax-addcom 8243 ax-mulcom 8244 ax-addass 8245 ax-mulass 8246 ax-distr 8247 ax-i2m1 8248 ax-0lt1 8249 ax-1rid 8250 ax-0id 8251 ax-rnegex 8252 ax-precex 8253 ax-cnre 8254 ax-pre-ltirr 8255 ax-pre-ltwlin 8256 ax-pre-lttrn 8257 ax-pre-apti 8258 ax-pre-ltadd 8259 ax-pre-mulgt0 8260 ax-pre-mulext 8261 ax-arch 8262 |
| This theorem depends on definitions: df-bi 117 df-dc 843 df-3or 1006 df-3an 1007 df-tru 1401 df-fal 1404 df-xor 1421 df-nf 1510 df-sb 1812 df-eu 2085 df-mo 2086 df-clab 2221 df-cleq 2227 df-clel 2230 df-nfc 2375 df-ne 2415 df-nel 2510 df-ral 2527 df-rex 2528 df-reu 2529 df-rmo 2530 df-rab 2531 df-v 2817 df-sbc 3046 df-csb 3142 df-dif 3216 df-un 3218 df-in 3220 df-ss 3227 df-nul 3513 df-pw 3676 df-sn 3700 df-pr 3701 df-op 3703 df-uni 3920 df-int 3955 df-iun 3998 df-br 4115 df-opab 4177 df-mpt 4178 df-id 4419 df-po 4422 df-iso 4423 df-xp 4760 df-rel 4761 df-cnv 4762 df-co 4763 df-dm 4764 df-rn 4765 df-res 4766 df-ima 4767 df-iota 5317 df-fun 5359 df-fn 5360 df-f 5361 df-f1 5362 df-fo 5363 df-f1o 5364 df-fv 5365 df-riota 6011 df-ov 6061 df-oprab 6062 df-mpo 6063 df-1st 6347 df-2nd 6348 df-er 6780 df-en 6989 df-pnf 8326 df-mnf 8327 df-xr 8328 df-ltxr 8329 df-le 8330 df-sub 8462 df-neg 8463 df-reap 8866 df-ap 8873 df-div 8964 df-inn 9255 df-2 9313 df-n0 9514 df-z 9595 df-q 9970 df-rp 10005 df-fl 10654 df-mod 10709 df-dvds 12499 |
| This theorem is referenced by: qnnen 13266 |
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