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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 9655 | . . 3 ⊢ ω ∈ V | |
| 2 | nn0ex 12505 | . . 3 ⊢ ℕ0 ∈ V | |
| 3 | eqid 2735 | . . . 4 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) | |
| 4 | 3 | hashgf1o 13987 | . . 3 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω):ω–1-1-onto→ℕ0 |
| 5 | f1oen2g 8981 | . . 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 13995 | . 2 ⊢ ℕ0 ≈ ℕ | |
| 8 | 6, 7 | entr2i 9021 | 1 ⊢ ℕ ≈ ω |
| Colors of variables: wff setvar class |
| Syntax hints: ∈ wcel 2108 Vcvv 3459 class class class wbr 5119 ↦ cmpt 5201 ↾ cres 5656 –1-1-onto→wf1o 6529 (class class class)co 7403 ωcom 7859 reccrdg 8421 ≈ cen 8954 0cc0 11127 1c1 11128 + caddc 11130 ℕcn 12238 ℕ0cn0 12499 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2007 ax-8 2110 ax-9 2118 ax-10 2141 ax-11 2157 ax-12 2177 ax-ext 2707 ax-sep 5266 ax-nul 5276 ax-pow 5335 ax-pr 5402 ax-un 7727 ax-inf2 9653 ax-cnex 11183 ax-resscn 11184 ax-1cn 11185 ax-icn 11186 ax-addcl 11187 ax-addrcl 11188 ax-mulcl 11189 ax-mulrcl 11190 ax-mulcom 11191 ax-addass 11192 ax-mulass 11193 ax-distr 11194 ax-i2m1 11195 ax-1ne0 11196 ax-1rid 11197 ax-rnegex 11198 ax-rrecex 11199 ax-cnre 11200 ax-pre-lttri 11201 ax-pre-lttrn 11202 ax-pre-ltadd 11203 ax-pre-mulgt0 11204 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2065 df-mo 2539 df-eu 2568 df-clab 2714 df-cleq 2727 df-clel 2809 df-nfc 2885 df-ne 2933 df-nel 3037 df-ral 3052 df-rex 3061 df-reu 3360 df-rab 3416 df-v 3461 df-sbc 3766 df-csb 3875 df-dif 3929 df-un 3931 df-in 3933 df-ss 3943 df-pss 3946 df-nul 4309 df-if 4501 df-pw 4577 df-sn 4602 df-pr 4604 df-op 4608 df-uni 4884 df-iun 4969 df-br 5120 df-opab 5182 df-mpt 5202 df-tr 5230 df-id 5548 df-eprel 5553 df-po 5561 df-so 5562 df-fr 5606 df-we 5608 df-xp 5660 df-rel 5661 df-cnv 5662 df-co 5663 df-dm 5664 df-rn 5665 df-res 5666 df-ima 5667 df-pred 6290 df-ord 6355 df-on 6356 df-lim 6357 df-suc 6358 df-iota 6483 df-fun 6532 df-fn 6533 df-f 6534 df-f1 6535 df-fo 6536 df-f1o 6537 df-fv 6538 df-riota 7360 df-ov 7406 df-oprab 7407 df-mpo 7408 df-om 7860 df-2nd 7987 df-frecs 8278 df-wrecs 8309 df-recs 8383 df-rdg 8422 df-er 8717 df-en 8958 df-dom 8959 df-sdom 8960 df-pnf 11269 df-mnf 11270 df-xr 11271 df-ltxr 11272 df-le 11273 df-sub 11466 df-neg 11467 df-nn 12239 df-n0 12500 df-z 12587 df-uz 12851 |
| This theorem is referenced by: nnct 13997 supcvg 15870 xpnnen 16227 znnen 16228 qnnen 16229 rexpen 16244 aleph1re 16261 aleph1irr 16262 bitsf1 16463 unben 16927 odinf 19542 odhash 19553 cygctb 19871 1stcfb 23381 2ndcredom 23386 1stcelcls 23397 hauspwdom 23437 met1stc 24458 met2ndci 24459 re2ndc 24738 iscmet3 25243 ovolctb2 25443 ovolfi 25445 ovoliunlem3 25455 iunmbl2 25508 uniiccdif 25529 dyadmbl 25551 opnmblALT 25554 mbfimaopnlem 25606 itg2seq 25693 aannenlem3 26288 dirith2 27489 nmounbseqi 30704 nmobndseqi 30706 minvecolem5 30808 padct 32643 f1ocnt 32725 dmvlsiga 34106 sigapildsys 34139 volmeas 34208 omssubadd 34278 carsgclctunlem3 34298 poimirlem30 37620 poimirlem32 37622 mblfinlem1 37627 ovoliunnfl 37632 heiborlem3 37783 heibor 37791 lzenom 42740 fiphp3d 42789 irrapx1 42798 pellex 42805 nnfoctb 45020 zenom 45024 qenom 45336 ioonct 45514 subsaliuncl 46335 caragenunicl 46501 caratheodory 46505 ovnsubaddlem2 46548 |
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