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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 3480 |
. . 3
| |
| 2 | nnssz 9557 |
. . . . . 6
| |
| 3 | dfss1 3413 |
. . . . . 6
| |
| 4 | 2, 3 | mpbi 145 |
. . . . 5
|
| 5 | dfin5 3208 |
. . . . 5
| |
| 6 | 4, 5 | eqtr3i 2254 |
. . . 4
|
| 7 | 6 | uneq1i 3359 |
. . 3
|
| 8 | rabid2 2711 |
. . . 4
| |
| 9 | elznn 9556 |
. . . . 5
| |
| 10 | 9 | simprbi 275 |
. . . 4
|
| 11 | 8, 10 | mprgbir 2591 |
. . 3
|
| 12 | 1, 7, 11 | 3eqtr4ri 2263 |
. 2
|
| 13 | nnex 9208 |
. . . 4
| |
| 14 | 13 | enref 6981 |
. . 3
|
| 15 | zex 9549 |
. . . . . 6
| |
| 16 | 15 | rabex 4239 |
. . . . 5
|
| 17 | nn0ex 9467 |
. . . . 5
| |
| 18 | negeq 8431 |
. . . . . . . 8
| |
| 19 | 18 | eleq1d 2300 |
. . . . . . 7
|
| 20 | 19 | elrab 2963 |
. . . . . 6
|
| 21 | 20 | simprbi 275 |
. . . . 5
|
| 22 | negeq 8431 |
. . . . . . 7
| |
| 23 | 22 | eleq1d 2300 |
. . . . . 6
|
| 24 | nn0negz 9574 |
. . . . . 6
| |
| 25 | nn0cn 9471 |
. . . . . . . . 9
| |
| 26 | 25 | negnegd 8540 |
. . . . . . . 8
|
| 27 | 26 | eleq1d 2300 |
. . . . . . 7
|
| 28 | 27 | ibir 177 |
. . . . . 6
|
| 29 | 23, 24, 28 | elrabd 2965 |
. . . . 5
|
| 30 | elrabi 2960 |
. . . . . . . 8
| |
| 31 | 30 | adantr 276 |
. . . . . . 7
|
| 32 | 31 | zcnd 9664 |
. . . . . 6
|
| 33 | 25 | adantl 277 |
. . . . . 6
|
| 34 | negcon2 8491 |
. . . . . 6
| |
| 35 | 32, 33, 34 | syl2anc 411 |
. . . . 5
|
| 36 | 16, 17, 21, 29, 35 | en3i 6987 |
. . . 4
|
| 37 | nn0ennn 10758 |
. . . 4
| |
| 38 | 36, 37 | entri 7003 |
. . 3
|
| 39 | inrab2 3482 |
. . . 4
| |
| 40 | incom 3401 |
. . . 4
| |
| 41 | rabeq0 3526 |
. . . . 5
| |
| 42 | 0red 8240 |
. . . . . . . 8
| |
| 43 | simpl 109 |
. . . . . . . . 9
| |
| 44 | 43 | nnred 9215 |
. . . . . . . 8
|
| 45 | nngt0 9227 |
. . . . . . . . 9
| |
| 46 | 45 | adantr 276 |
. . . . . . . 8
|
| 47 | nn0ge0 9486 |
. . . . . . . . . 10
| |
| 48 | 47 | adantl 277 |
. . . . . . . . 9
|
| 49 | 44 | le0neg1d 8756 |
. . . . . . . . 9
|
| 50 | 48, 49 | mpbird 167 |
. . . . . . . 8
|
| 51 | 42, 44, 42, 46, 50 | ltletrd 8662 |
. . . . . . 7
|
| 52 | 42 | ltnrd 8350 |
. . . . . . 7
|
| 53 | 51, 52 | pm2.65da 667 |
. . . . . 6
|
| 54 | 53, 4 | eleq2s 2326 |
. . . . 5
|
| 55 | 41, 54 | mprgbir 2591 |
. . . 4
|
| 56 | 39, 40, 55 | 3eqtr3i 2260 |
. . 3
|
| 57 | unennn 13098 |
. . 3
| |
| 58 | 14, 38, 56, 57 | mp3an 1374 |
. 2
|
| 59 | 12, 58 | eqbrtri 4114 |
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 2204 ax-14 2205 ax-ext 2213 ax-sep 4212 ax-pow 4270 ax-pr 4305 ax-un 4536 ax-setind 4641 ax-cnex 8183 ax-resscn 8184 ax-1cn 8185 ax-1re 8186 ax-icn 8187 ax-addcl 8188 ax-addrcl 8189 ax-mulcl 8190 ax-mulrcl 8191 ax-addcom 8192 ax-mulcom 8193 ax-addass 8194 ax-mulass 8195 ax-distr 8196 ax-i2m1 8197 ax-0lt1 8198 ax-1rid 8199 ax-0id 8200 ax-rnegex 8201 ax-precex 8202 ax-cnre 8203 ax-pre-ltirr 8204 ax-pre-ltwlin 8205 ax-pre-lttrn 8206 ax-pre-apti 8207 ax-pre-ltadd 8208 ax-pre-mulgt0 8209 ax-pre-mulext 8210 ax-arch 8211 |
| 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 1811 df-eu 2082 df-mo 2083 df-clab 2218 df-cleq 2224 df-clel 2227 df-nfc 2364 df-ne 2404 df-nel 2499 df-ral 2516 df-rex 2517 df-reu 2518 df-rmo 2519 df-rab 2520 df-v 2805 df-sbc 3033 df-csb 3129 df-dif 3203 df-un 3205 df-in 3207 df-ss 3214 df-nul 3497 df-pw 3658 df-sn 3679 df-pr 3680 df-op 3682 df-uni 3899 df-int 3934 df-iun 3977 df-br 4094 df-opab 4156 df-mpt 4157 df-id 4396 df-po 4399 df-iso 4400 df-xp 4737 df-rel 4738 df-cnv 4739 df-co 4740 df-dm 4741 df-rn 4742 df-res 4743 df-ima 4744 df-iota 5293 df-fun 5335 df-fn 5336 df-f 5337 df-f1 5338 df-fo 5339 df-f1o 5340 df-fv 5341 df-riota 5981 df-ov 6031 df-oprab 6032 df-mpo 6033 df-1st 6312 df-2nd 6313 df-er 6745 df-en 6953 df-pnf 8275 df-mnf 8276 df-xr 8277 df-ltxr 8278 df-le 8279 df-sub 8411 df-neg 8412 df-reap 8814 df-ap 8821 df-div 8912 df-inn 9203 df-2 9261 df-n0 9462 df-z 9541 df-q 9915 df-rp 9950 df-fl 10593 df-mod 10648 df-dvds 12429 |
| This theorem is referenced by: qnnen 13132 |
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