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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 9090 | . . 3 ⊢ ω ∈ V | |
2 | nn0ex 11891 | . . 3 ⊢ ℕ0 ∈ V | |
3 | eqid 2798 | . . . 4 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) | |
4 | 3 | hashgf1o 13334 | . . 3 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω):ω–1-1-onto→ℕ0 |
5 | f1oen2g 8509 | . . 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 1458 | . 2 ⊢ ω ≈ ℕ0 |
7 | nn0ennn 13342 | . 2 ⊢ ℕ0 ≈ ℕ | |
8 | 6, 7 | entr2i 8547 | 1 ⊢ ℕ ≈ ω |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2111 Vcvv 3441 class class class wbr 5030 ↦ cmpt 5110 ↾ cres 5521 –1-1-onto→wf1o 6323 (class class class)co 7135 ωcom 7560 reccrdg 8028 ≈ cen 8489 0cc0 10526 1c1 10527 + caddc 10529 ℕcn 11625 ℕ0cn0 11885 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2113 ax-9 2121 ax-10 2142 ax-11 2158 ax-12 2175 ax-ext 2770 ax-sep 5167 ax-nul 5174 ax-pow 5231 ax-pr 5295 ax-un 7441 ax-inf2 9088 ax-cnex 10582 ax-resscn 10583 ax-1cn 10584 ax-icn 10585 ax-addcl 10586 ax-addrcl 10587 ax-mulcl 10588 ax-mulrcl 10589 ax-mulcom 10590 ax-addass 10591 ax-mulass 10592 ax-distr 10593 ax-i2m1 10594 ax-1ne0 10595 ax-1rid 10596 ax-rnegex 10597 ax-rrecex 10598 ax-cnre 10599 ax-pre-lttri 10600 ax-pre-lttrn 10601 ax-pre-ltadd 10602 ax-pre-mulgt0 10603 |
This theorem depends on definitions: df-bi 210 df-an 400 df-or 845 df-3or 1085 df-3an 1086 df-tru 1541 df-ex 1782 df-nf 1786 df-sb 2070 df-mo 2598 df-eu 2629 df-clab 2777 df-cleq 2791 df-clel 2870 df-nfc 2938 df-ne 2988 df-nel 3092 df-ral 3111 df-rex 3112 df-reu 3113 df-rab 3115 df-v 3443 df-sbc 3721 df-csb 3829 df-dif 3884 df-un 3886 df-in 3888 df-ss 3898 df-pss 3900 df-nul 4244 df-if 4426 df-pw 4499 df-sn 4526 df-pr 4528 df-tp 4530 df-op 4532 df-uni 4801 df-iun 4883 df-br 5031 df-opab 5093 df-mpt 5111 df-tr 5137 df-id 5425 df-eprel 5430 df-po 5438 df-so 5439 df-fr 5478 df-we 5480 df-xp 5525 df-rel 5526 df-cnv 5527 df-co 5528 df-dm 5529 df-rn 5530 df-res 5531 df-ima 5532 df-pred 6116 df-ord 6162 df-on 6163 df-lim 6164 df-suc 6165 df-iota 6283 df-fun 6326 df-fn 6327 df-f 6328 df-f1 6329 df-fo 6330 df-f1o 6331 df-fv 6332 df-riota 7093 df-ov 7138 df-oprab 7139 df-mpo 7140 df-om 7561 df-wrecs 7930 df-recs 7991 df-rdg 8029 df-er 8272 df-en 8493 df-dom 8494 df-sdom 8495 df-pnf 10666 df-mnf 10667 df-xr 10668 df-ltxr 10669 df-le 10670 df-sub 10861 df-neg 10862 df-nn 11626 df-n0 11886 df-z 11970 df-uz 12232 |
This theorem is referenced by: nnct 13344 supcvg 15203 xpnnen 15556 znnen 15557 qnnen 15558 rexpen 15573 aleph1re 15590 aleph1irr 15591 bitsf1 15785 unben 16235 odinf 18682 odhash 18691 cygctb 19005 1stcfb 22050 2ndcredom 22055 1stcelcls 22066 hauspwdom 22106 met1stc 23128 met2ndci 23129 re2ndc 23406 iscmet3 23897 ovolctb2 24096 ovolfi 24098 ovoliunlem3 24108 iunmbl2 24161 uniiccdif 24182 dyadmbl 24204 opnmblALT 24207 mbfimaopnlem 24259 itg2seq 24346 aannenlem3 24926 dirith2 26112 nmounbseqi 28560 nmobndseqi 28562 minvecolem5 28664 padct 30481 f1ocnt 30551 dmvlsiga 31498 sigapildsys 31531 volmeas 31600 omssubadd 31668 carsgclctunlem3 31688 poimirlem30 35087 poimirlem32 35089 mblfinlem1 35094 ovoliunnfl 35099 heiborlem3 35251 heibor 35259 lzenom 39711 fiphp3d 39760 irrapx1 39769 pellex 39776 nnfoctb 41681 zenom 41686 qenom 41993 ioonct 42174 subsaliuncl 42998 caragenunicl 43163 caratheodory 43167 ovnsubaddlem2 43210 |
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