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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 9550 | . . 3 ⊢ ω ∈ V | |
| 2 | nn0ex 12405 | . . 3 ⊢ ℕ0 ∈ V | |
| 3 | eqid 2734 | . . . 4 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) | |
| 4 | 3 | hashgf1o 13892 | . . 3 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω):ω–1-1-onto→ℕ0 |
| 5 | f1oen2g 8903 | . . 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 1463 | . 2 ⊢ ω ≈ ℕ0 |
| 7 | nn0ennn 13900 | . 2 ⊢ ℕ0 ≈ ℕ | |
| 8 | 6, 7 | entr2i 8944 | 1 ⊢ ℕ ≈ ω |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2113 Vcvv 3438 class class class wbr 5096 ↦ cmpt 5177 ↾ cres 5624 –1-1-onto→wf1o 6489 (class class class)co 7356 ωcom 7806 reccrdg 8338 ≈ cen 8878 0cc0 11024 1c1 11025 + caddc 11027 ℕcn 12143 ℕ0cn0 12399 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2706 ax-sep 5239 ax-nul 5249 ax-pow 5308 ax-pr 5375 ax-un 7678 ax-inf2 9548 ax-cnex 11080 ax-resscn 11081 ax-1cn 11082 ax-icn 11083 ax-addcl 11084 ax-addrcl 11085 ax-mulcl 11086 ax-mulrcl 11087 ax-mulcom 11088 ax-addass 11089 ax-mulass 11090 ax-distr 11091 ax-i2m1 11092 ax-1ne0 11093 ax-1rid 11094 ax-rnegex 11095 ax-rrecex 11096 ax-cnre 11097 ax-pre-lttri 11098 ax-pre-lttrn 11099 ax-pre-ltadd 11100 ax-pre-mulgt0 11101 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2567 df-clab 2713 df-cleq 2726 df-clel 2809 df-nfc 2883 df-ne 2931 df-nel 3035 df-ral 3050 df-rex 3059 df-reu 3349 df-rab 3398 df-v 3440 df-sbc 3739 df-csb 3848 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4579 df-pr 4581 df-op 4585 df-uni 4862 df-iun 4946 df-br 5097 df-opab 5159 df-mpt 5178 df-tr 5204 df-id 5517 df-eprel 5522 df-po 5530 df-so 5531 df-fr 5575 df-we 5577 df-xp 5628 df-rel 5629 df-cnv 5630 df-co 5631 df-dm 5632 df-rn 5633 df-res 5634 df-ima 5635 df-pred 6257 df-ord 6318 df-on 6319 df-lim 6320 df-suc 6321 df-iota 6446 df-fun 6492 df-fn 6493 df-f 6494 df-f1 6495 df-fo 6496 df-f1o 6497 df-fv 6498 df-riota 7313 df-ov 7359 df-oprab 7360 df-mpo 7361 df-om 7807 df-2nd 7932 df-frecs 8221 df-wrecs 8252 df-recs 8301 df-rdg 8339 df-er 8633 df-en 8882 df-dom 8883 df-sdom 8884 df-pnf 11166 df-mnf 11167 df-xr 11168 df-ltxr 11169 df-le 11170 df-sub 11364 df-neg 11365 df-nn 12144 df-n0 12400 df-z 12487 df-uz 12750 |
| This theorem is referenced by: nnct 13902 supcvg 15777 xpnnen 16134 znnen 16135 qnnen 16136 rexpen 16151 aleph1re 16168 aleph1irr 16169 bitsf1 16371 unben 16835 odinf 19490 odhash 19501 cygctb 19819 1stcfb 23387 2ndcredom 23392 1stcelcls 23403 hauspwdom 23443 met1stc 24463 met2ndci 24464 re2ndc 24743 iscmet3 25247 ovolctb2 25447 ovolfi 25449 ovoliunlem3 25459 iunmbl2 25512 uniiccdif 25533 dyadmbl 25555 opnmblALT 25558 mbfimaopnlem 25610 itg2seq 25697 aannenlem3 26292 dirith2 27493 nmounbseqi 30801 nmobndseqi 30803 minvecolem5 30905 padct 32746 f1ocnt 32829 dmvlsiga 34235 sigapildsys 34268 volmeas 34337 omssubadd 34406 carsgclctunlem3 34426 poimirlem30 37790 poimirlem32 37792 mblfinlem1 37797 ovoliunnfl 37802 heiborlem3 37953 heibor 37961 lzenom 42954 fiphp3d 43003 irrapx1 43012 pellex 43019 nnfoctb 45235 zenom 45239 qenom 45548 ioonct 45725 subsaliuncl 46544 caragenunicl 46710 caratheodory 46714 ovnsubaddlem2 46757 |
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