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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 9445 | . . 3 ⊢ ω ∈ V | |
2 | nn0ex 12285 | . . 3 ⊢ ℕ0 ∈ V | |
3 | eqid 2736 | . . . 4 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) | |
4 | 3 | hashgf1o 13737 | . . 3 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω):ω–1-1-onto→ℕ0 |
5 | f1oen2g 8789 | . . 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 1461 | . 2 ⊢ ω ≈ ℕ0 |
7 | nn0ennn 13745 | . 2 ⊢ ℕ0 ≈ ℕ | |
8 | 6, 7 | entr2i 8830 | 1 ⊢ ℕ ≈ ω |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2104 Vcvv 3437 class class class wbr 5081 ↦ cmpt 5164 ↾ cres 5602 –1-1-onto→wf1o 6457 (class class class)co 7307 ωcom 7744 reccrdg 8271 ≈ cen 8761 0cc0 10917 1c1 10918 + caddc 10920 ℕcn 12019 ℕ0cn0 12279 |
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 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2707 ax-sep 5232 ax-nul 5239 ax-pow 5297 ax-pr 5361 ax-un 7620 ax-inf2 9443 ax-cnex 10973 ax-resscn 10974 ax-1cn 10975 ax-icn 10976 ax-addcl 10977 ax-addrcl 10978 ax-mulcl 10979 ax-mulrcl 10980 ax-mulcom 10981 ax-addass 10982 ax-mulass 10983 ax-distr 10984 ax-i2m1 10985 ax-1ne0 10986 ax-1rid 10987 ax-rnegex 10988 ax-rrecex 10989 ax-cnre 10990 ax-pre-lttri 10991 ax-pre-lttrn 10992 ax-pre-ltadd 10993 ax-pre-mulgt0 10994 |
This theorem depends on definitions: df-bi 206 df-an 398 df-or 846 df-3or 1088 df-3an 1089 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2538 df-eu 2567 df-clab 2714 df-cleq 2728 df-clel 2814 df-nfc 2887 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-reu 3286 df-rab 3287 df-v 3439 df-sbc 3722 df-csb 3838 df-dif 3895 df-un 3897 df-in 3899 df-ss 3909 df-pss 3911 df-nul 4263 df-if 4466 df-pw 4541 df-sn 4566 df-pr 4568 df-op 4572 df-uni 4845 df-iun 4933 df-br 5082 df-opab 5144 df-mpt 5165 df-tr 5199 df-id 5500 df-eprel 5506 df-po 5514 df-so 5515 df-fr 5555 df-we 5557 df-xp 5606 df-rel 5607 df-cnv 5608 df-co 5609 df-dm 5610 df-rn 5611 df-res 5612 df-ima 5613 df-pred 6217 df-ord 6284 df-on 6285 df-lim 6286 df-suc 6287 df-iota 6410 df-fun 6460 df-fn 6461 df-f 6462 df-f1 6463 df-fo 6464 df-f1o 6465 df-fv 6466 df-riota 7264 df-ov 7310 df-oprab 7311 df-mpo 7312 df-om 7745 df-2nd 7864 df-frecs 8128 df-wrecs 8159 df-recs 8233 df-rdg 8272 df-er 8529 df-en 8765 df-dom 8766 df-sdom 8767 df-pnf 11057 df-mnf 11058 df-xr 11059 df-ltxr 11060 df-le 11061 df-sub 11253 df-neg 11254 df-nn 12020 df-n0 12280 df-z 12366 df-uz 12629 |
This theorem is referenced by: nnct 13747 supcvg 15613 xpnnen 15965 znnen 15966 qnnen 15967 rexpen 15982 aleph1re 15999 aleph1irr 16000 bitsf1 16198 unben 16655 odinf 19215 odhash 19224 cygctb 19538 1stcfb 22641 2ndcredom 22646 1stcelcls 22657 hauspwdom 22697 met1stc 23722 met2ndci 23723 re2ndc 24009 iscmet3 24502 ovolctb2 24701 ovolfi 24703 ovoliunlem3 24713 iunmbl2 24766 uniiccdif 24787 dyadmbl 24809 opnmblALT 24812 mbfimaopnlem 24864 itg2seq 24952 aannenlem3 25535 dirith2 26721 nmounbseqi 29184 nmobndseqi 29186 minvecolem5 29288 padct 31099 f1ocnt 31168 dmvlsiga 32142 sigapildsys 32175 volmeas 32244 omssubadd 32312 carsgclctunlem3 32332 poimirlem30 35851 poimirlem32 35853 mblfinlem1 35858 ovoliunnfl 35863 heiborlem3 36015 heibor 36023 lzenom 40629 fiphp3d 40678 irrapx1 40687 pellex 40694 nnfoctb 42633 zenom 42638 qenom 42948 ioonct 43124 subsaliuncl 43946 caragenunicl 44112 caratheodory 44116 ovnsubaddlem2 44159 |
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