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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 9108 | . . 3 ⊢ ω ∈ V | |
2 | nn0ex 11906 | . . 3 ⊢ ℕ0 ∈ V | |
3 | eqid 2823 | . . . 4 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) = (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω) | |
4 | 3 | hashgf1o 13342 | . . 3 ⊢ (rec((𝑥 ∈ V ↦ (𝑥 + 1)), 0) ↾ ω):ω–1-1-onto→ℕ0 |
5 | f1oen2g 8528 | . . 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 1457 | . 2 ⊢ ω ≈ ℕ0 |
7 | nn0ennn 13350 | . 2 ⊢ ℕ0 ≈ ℕ | |
8 | 6, 7 | entr2i 8566 | 1 ⊢ ℕ ≈ ω |
Colors of variables: wff setvar class |
Syntax hints: ∈ wcel 2114 Vcvv 3496 class class class wbr 5068 ↦ cmpt 5148 ↾ cres 5559 –1-1-onto→wf1o 6356 (class class class)co 7158 ωcom 7582 reccrdg 8047 ≈ cen 8508 0cc0 10539 1c1 10540 + caddc 10542 ℕcn 11640 ℕ0cn0 11900 |
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 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2795 ax-sep 5205 ax-nul 5212 ax-pow 5268 ax-pr 5332 ax-un 7463 ax-inf2 9106 ax-cnex 10595 ax-resscn 10596 ax-1cn 10597 ax-icn 10598 ax-addcl 10599 ax-addrcl 10600 ax-mulcl 10601 ax-mulrcl 10602 ax-mulcom 10603 ax-addass 10604 ax-mulass 10605 ax-distr 10606 ax-i2m1 10607 ax-1ne0 10608 ax-1rid 10609 ax-rnegex 10610 ax-rrecex 10611 ax-cnre 10612 ax-pre-lttri 10613 ax-pre-lttrn 10614 ax-pre-ltadd 10615 ax-pre-mulgt0 10616 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2802 df-cleq 2816 df-clel 2895 df-nfc 2965 df-ne 3019 df-nel 3126 df-ral 3145 df-rex 3146 df-reu 3147 df-rab 3149 df-v 3498 df-sbc 3775 df-csb 3886 df-dif 3941 df-un 3943 df-in 3945 df-ss 3954 df-pss 3956 df-nul 4294 df-if 4470 df-pw 4543 df-sn 4570 df-pr 4572 df-tp 4574 df-op 4576 df-uni 4841 df-iun 4923 df-br 5069 df-opab 5131 df-mpt 5149 df-tr 5175 df-id 5462 df-eprel 5467 df-po 5476 df-so 5477 df-fr 5516 df-we 5518 df-xp 5563 df-rel 5564 df-cnv 5565 df-co 5566 df-dm 5567 df-rn 5568 df-res 5569 df-ima 5570 df-pred 6150 df-ord 6196 df-on 6197 df-lim 6198 df-suc 6199 df-iota 6316 df-fun 6359 df-fn 6360 df-f 6361 df-f1 6362 df-fo 6363 df-f1o 6364 df-fv 6365 df-riota 7116 df-ov 7161 df-oprab 7162 df-mpo 7163 df-om 7583 df-wrecs 7949 df-recs 8010 df-rdg 8048 df-er 8291 df-en 8512 df-dom 8513 df-sdom 8514 df-pnf 10679 df-mnf 10680 df-xr 10681 df-ltxr 10682 df-le 10683 df-sub 10874 df-neg 10875 df-nn 11641 df-n0 11901 df-z 11985 df-uz 12247 |
This theorem is referenced by: nnct 13352 supcvg 15213 xpnnen 15566 znnen 15567 qnnen 15568 rexpen 15583 aleph1re 15600 aleph1irr 15601 bitsf1 15797 unben 16247 odinf 18692 odhash 18701 cygctb 19014 1stcfb 22055 2ndcredom 22060 1stcelcls 22071 hauspwdom 22111 met1stc 23133 met2ndci 23134 re2ndc 23411 iscmet3 23898 ovolctb2 24095 ovolfi 24097 ovoliunlem3 24107 iunmbl2 24160 uniiccdif 24181 dyadmbl 24203 opnmblALT 24206 mbfimaopnlem 24258 itg2seq 24345 aannenlem3 24921 dirith2 26106 nmounbseqi 28556 nmobndseqi 28558 minvecolem5 28660 padct 30457 f1ocnt 30527 dmvlsiga 31390 sigapildsys 31423 volmeas 31492 omssubadd 31560 carsgclctunlem3 31580 poimirlem30 34924 poimirlem32 34926 mblfinlem1 34931 ovoliunnfl 34936 heiborlem3 35093 heibor 35101 lzenom 39374 fiphp3d 39423 irrapx1 39432 pellex 39439 nnfoctb 41316 zenom 41321 qenom 41636 ioonct 41820 subsaliuncl 42648 caragenunicl 42813 caratheodory 42817 ovnsubaddlem2 42860 |
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