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| Mirrors > Home > MPE Home > Th. List > nnenom | Structured version Visualization version GIF version | ||
| Description: The set of positive integers (as a subset of complex numbers) is equinumerous to omega (the set of finite ordinal numbers). (Contributed by NM, 31-Jul-2004.) (Revised by Mario Carneiro, 15-Sep-2013.) |
| Ref | Expression |
|---|---|
| nnenom | ⊢ ℕ ≈ ω |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | omex 9559 | . . 3 ⊢ ω ∈ V | |
| 2 | nn0ex 12438 | . . 3 ⊢ ℕ0 ∈ V | |
| 3 | eqid 2741 | . . . 4 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) | |
| 4 | 3 | hashgf1o 13928 | . . 3 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω):ω–1-1-onto→ℕ0 |
| 5 | f1oen2g 8909 | . . 3 ⊢ ((ω ∈ V ∧ ℕ0 ∈ V ∧ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω):ω–1-1-onto→ℕ0) → ω ≈ ℕ0) | |
| 6 | 1, 2, 4, 5 | mp3an 1470 | . 2 ⊢ ω ≈ ℕ0 |
| 7 | nn0ennn 13936 | . 2 ⊢ ℕ0 ≈ ℕ | |
| 8 | 6, 7 | entr2i 8950 | 1 ⊢ ℕ ≈ ω |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2121 Vcvv 3433 class class class wbr 5075 ↦ cmpt 5156 ↾ cres 5623 –1-1-onto→wf1o 6488 (class class class)co 7360 ωcom 7810 reccrdg 8342 ≈ cen 8884 0cc0 11033 1c1 11034 + caddc 11036 ℕcn 12169 ℕ0cn0 12432 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1803 ax-4 1817 ax-5 1918 ax-6 1975 ax-7 2016 ax-8 2123 ax-9 2131 ax-10 2154 ax-11 2170 ax-12 2191 ax-ext 2713 ax-sep 5221 ax-nul 5231 ax-pow 5297 ax-pr 5365 ax-un 7682 ax-inf2 9557 ax-cnex 11089 ax-resscn 11090 ax-1cn 11091 ax-icn 11092 ax-addcl 11093 ax-addrcl 11094 ax-mulcl 11095 ax-mulrcl 11096 ax-mulcom 11097 ax-addass 11098 ax-mulass 11099 ax-distr 11100 ax-i2m1 11101 ax-1ne0 11102 ax-1rid 11103 ax-rnegex 11104 ax-rrecex 11105 ax-cnre 11106 ax-pre-lttri 11107 ax-pre-lttrn 11108 ax-pre-ltadd 11109 ax-pre-mulgt0 11110 |
| This theorem depends on definitions: df-bi 209 df-an 398 df-or 855 df-3or 1094 df-3an 1095 df-tru 1551 df-fal 1561 df-ex 1788 df-nf 1792 df-sb 2075 df-mo 2545 df-eu 2575 df-clab 2720 df-cleq 2733 df-clel 2816 df-nfc 2890 df-ne 2937 df-nel 3041 df-ral 3056 df-rex 3066 df-reu 3347 df-rab 3394 df-v 3435 df-sbc 3726 df-csb 3834 df-dif 3888 df-un 3890 df-in 3892 df-ss 3902 df-pss 3905 df-nul 4265 df-if 4458 df-pw 4534 df-sn 4559 df-pr 4561 df-op 4565 df-uni 4842 df-iun 4926 df-br 5076 df-opab 5138 df-mpt 5157 df-tr 5183 df-id 5516 df-eprel 5521 df-po 5529 df-so 5530 df-fr 5574 df-we 5576 df-xp 5627 df-rel 5628 df-cnv 5629 df-co 5630 df-dm 5631 df-rn 5632 df-res 5633 df-ima 5634 df-pred 6256 df-ord 6317 df-on 6318 df-lim 6319 df-suc 6320 df-iota 6445 df-fun 6491 df-fn 6492 df-f 6493 df-f1 6494 df-fo 6495 df-f1o 6496 df-fv 6497 df-riota 7317 df-ov 7363 df-oprab 7364 df-mpo 7365 df-om 7811 df-2nd 7936 df-frecs 8225 df-wrecs 8256 df-recs 8305 df-rdg 8343 df-er 8637 df-en 8888 df-dom 8889 df-sdom 8890 df-pnf 11176 df-mnf 11177 df-xr 11178 df-ltxr 11179 df-le 11180 df-sub 11374 df-neg 11375 df-nn 12170 df-n0 12433 df-z 12520 df-uz 12784 |
| This theorem is referenced by: nnct 13938 supcvg 15816 xpnnen 16173 znnen 16174 qnnen 16175 rexpen 16190 aleph1re 16207 aleph1irr 16208 bitsf1 16410 unben 16875 odinf 19533 odhash 19544 cygctb 19862 1stcfb 23432 2ndcredom 23437 1stcelcls 23448 hauspwdom 23488 met1stc 24508 met2ndci 24509 re2ndc 24788 iscmet3 25282 ovolctb2 25481 ovolfi 25483 ovoliunlem3 25493 iunmbl2 25546 uniiccdif 25567 dyadmbl 25589 opnmblALT 25592 mbfimaopnlem 25644 itg2seq 25731 aannenlem3 26318 dirith2 27513 nmounbseqi 30870 nmobndseqi 30872 minvecolem5 30974 padct 32814 f1ocnt 32896 dmvlsiga 34325 sigapildsys 34358 volmeas 34427 omssubadd 34496 carsgclctunlem3 34516 poimirlem30 38032 poimirlem32 38034 mblfinlem1 38039 ovoliunnfl 38044 heiborlem3 38195 heibor 38203 lzenom 43234 fiphp3d 43279 irrapx1 43288 pellex 43295 nnfoctb 45511 zenom 45515 qenom 45820 ioonct 45996 subsaliuncl 46815 caragenunicl 46981 caratheodory 46985 ovnsubaddlem2 47028 |
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