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Mirrors > Home > ILE Home > Th. List > nn0ennn | Unicode version |
Description: The nonnegative integers are equinumerous to the positive integers. (Contributed by NM, 19-Jul-2004.) |
Ref | Expression |
---|---|
nn0ennn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | nn0ex 8976 | . 2 | |
2 | nnex 8719 | . 2 | |
3 | nn0p1nn 9009 | . 2 | |
4 | nnm1nn0 9011 | . 2 | |
5 | nncn 8721 | . . 3 | |
6 | nn0cn 8980 | . . 3 | |
7 | ax-1cn 7706 | . . . . . 6 | |
8 | subadd 7958 | . . . . . 6 | |
9 | 7, 8 | mp3an2 1303 | . . . . 5 |
10 | eqcom 2139 | . . . . 5 | |
11 | eqcom 2139 | . . . . 5 | |
12 | 9, 10, 11 | 3bitr4g 222 | . . . 4 |
13 | addcom 7892 | . . . . . . 7 | |
14 | 7, 13 | mpan 420 | . . . . . 6 |
15 | 14 | eqeq2d 2149 | . . . . 5 |
16 | 15 | adantl 275 | . . . 4 |
17 | 12, 16 | bitrd 187 | . . 3 |
18 | 5, 6, 17 | syl2anr 288 | . 2 |
19 | 1, 2, 3, 4, 18 | en3i 6658 | 1 |
Colors of variables: wff set class |
Syntax hints: wa 103 wb 104 wceq 1331 wcel 1480 class class class wbr 3924 (class class class)co 5767 cen 6625 cc 7611 c1 7614 caddc 7616 cmin 7926 cn 8713 cn0 8970 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 603 ax-in2 604 ax-io 698 ax-5 1423 ax-7 1424 ax-gen 1425 ax-ie1 1469 ax-ie2 1470 ax-8 1482 ax-10 1483 ax-11 1484 ax-i12 1485 ax-bndl 1486 ax-4 1487 ax-13 1491 ax-14 1492 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-ext 2119 ax-sep 4041 ax-pow 4093 ax-pr 4126 ax-un 4350 ax-setind 4447 ax-cnex 7704 ax-resscn 7705 ax-1cn 7706 ax-1re 7707 ax-icn 7708 ax-addcl 7709 ax-addrcl 7710 ax-mulcl 7711 ax-addcom 7713 ax-addass 7715 ax-distr 7717 ax-i2m1 7718 ax-0id 7721 ax-rnegex 7722 ax-cnre 7724 |
This theorem depends on definitions: df-bi 116 df-3an 964 df-tru 1334 df-fal 1337 df-nf 1437 df-sb 1736 df-eu 2000 df-mo 2001 df-clab 2124 df-cleq 2130 df-clel 2133 df-nfc 2268 df-ne 2307 df-ral 2419 df-rex 2420 df-reu 2421 df-rab 2423 df-v 2683 df-sbc 2905 df-dif 3068 df-un 3070 df-in 3072 df-ss 3079 df-pw 3507 df-sn 3528 df-pr 3529 df-op 3531 df-uni 3732 df-int 3767 df-br 3925 df-opab 3985 df-mpt 3986 df-id 4210 df-xp 4540 df-rel 4541 df-cnv 4542 df-co 4543 df-dm 4544 df-rn 4545 df-iota 5083 df-fun 5120 df-fn 5121 df-f 5122 df-f1 5123 df-fo 5124 df-f1o 5125 df-fv 5126 df-riota 5723 df-ov 5770 df-oprab 5771 df-mpo 5772 df-en 6628 df-sub 7928 df-inn 8714 df-n0 8971 |
This theorem is referenced by: nnenom 10200 uzennn 10202 xpnnen 11896 znnen 11900 ennnfonelemim 11926 |
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