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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 9556 | . . 3 ⊢ ω ∈ V | |
| 2 | nn0ex 12411 | . . 3 ⊢ ℕ0 ∈ V | |
| 3 | eqid 2737 | . . . 4 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) | |
| 4 | 3 | hashgf1o 13898 | . . 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 1464 | . 2 ⊢ ω ≈ ℕ0 |
| 7 | nn0ennn 13906 | . 2 ⊢ ℕ0 ≈ ℕ | |
| 8 | 6, 7 | entr2i 8950 | 1 ⊢ ℕ ≈ ω |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2114 Vcvv 3441 class class class wbr 5099 ↦ cmpt 5180 ↾ cres 5627 –1-1-onto→wf1o 6492 (class class class)co 7360 ωcom 7810 reccrdg 8342 ≈ cen 8884 0cc0 11030 1c1 11031 + caddc 11033 ℕcn 12149 ℕ0cn0 12405 |
| 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 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5242 ax-nul 5252 ax-pow 5311 ax-pr 5378 ax-un 7682 ax-inf2 9554 ax-cnex 11086 ax-resscn 11087 ax-1cn 11088 ax-icn 11089 ax-addcl 11090 ax-addrcl 11091 ax-mulcl 11092 ax-mulrcl 11093 ax-mulcom 11094 ax-addass 11095 ax-mulass 11096 ax-distr 11097 ax-i2m1 11098 ax-1ne0 11099 ax-1rid 11100 ax-rnegex 11101 ax-rrecex 11102 ax-cnre 11103 ax-pre-lttri 11104 ax-pre-lttrn 11105 ax-pre-ltadd 11106 ax-pre-mulgt0 11107 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-nel 3038 df-ral 3053 df-rex 3062 df-reu 3352 df-rab 3401 df-v 3443 df-sbc 3742 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4287 df-if 4481 df-pw 4557 df-sn 4582 df-pr 4584 df-op 4588 df-uni 4865 df-iun 4949 df-br 5100 df-opab 5162 df-mpt 5181 df-tr 5207 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-pred 6260 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6495 df-fn 6496 df-f 6497 df-f1 6498 df-fo 6499 df-f1o 6500 df-fv 6501 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 11172 df-mnf 11173 df-xr 11174 df-ltxr 11175 df-le 11176 df-sub 11370 df-neg 11371 df-nn 12150 df-n0 12406 df-z 12493 df-uz 12756 |
| This theorem is referenced by: nnct 13908 supcvg 15783 xpnnen 16140 znnen 16141 qnnen 16142 rexpen 16157 aleph1re 16174 aleph1irr 16175 bitsf1 16377 unben 16841 odinf 19496 odhash 19507 cygctb 19825 1stcfb 23393 2ndcredom 23398 1stcelcls 23409 hauspwdom 23449 met1stc 24469 met2ndci 24470 re2ndc 24749 iscmet3 25253 ovolctb2 25453 ovolfi 25455 ovoliunlem3 25465 iunmbl2 25518 uniiccdif 25539 dyadmbl 25561 opnmblALT 25564 mbfimaopnlem 25616 itg2seq 25703 aannenlem3 26298 dirith2 27499 nmounbseqi 30856 nmobndseqi 30858 minvecolem5 30960 padct 32799 f1ocnt 32882 dmvlsiga 34288 sigapildsys 34321 volmeas 34390 omssubadd 34459 carsgclctunlem3 34479 poimirlem30 37853 poimirlem32 37855 mblfinlem1 37860 ovoliunnfl 37865 heiborlem3 38016 heibor 38024 lzenom 43079 fiphp3d 43128 irrapx1 43137 pellex 43144 nnfoctb 45360 zenom 45364 qenom 45673 ioonct 45850 subsaliuncl 46669 caragenunicl 46835 caratheodory 46839 ovnsubaddlem2 46882 |
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