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| Mirrors > Home > MPE Home > Th. List > onenon | Structured version Visualization version GIF version | ||
| Description: Every ordinal number is numerable. (Contributed by Mario Carneiro, 29-Apr-2015.) |
| Ref | Expression |
|---|---|
| onenon | ⊢ (𝐴 ∈ On → 𝐴 ∈ dom card) |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | enrefg 8969 | . 2 ⊢ (𝐴 ∈ On → 𝐴 ≈ 𝐴) | |
| 2 | isnumi 9920 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐴 ≈ 𝐴) → 𝐴 ∈ dom card) | |
| 3 | 1, 2 | mpdan 699 | 1 ⊢ (𝐴 ∈ On → 𝐴 ∈ dom card) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2145 class class class wbr 5104 dom cdm 5651 Oncon0 6349 ≈ cen 8928 cardccrd 9909 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1818 ax-4 1832 ax-5 1933 ax-6 1990 ax-7 2031 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2737 ax-sep 5250 ax-pow 5326 ax-pr 5394 ax-un 7722 |
| This theorem depends on definitions: df-bi 210 df-an 401 df-or 861 df-3or 1102 df-3an 1103 df-tru 1566 df-fal 1576 df-ex 1803 df-nf 1807 df-sb 2094 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3080 df-rex 3090 df-rab 3418 df-v 3459 df-dif 3910 df-un 3912 df-in 3914 df-ss 3924 df-pss 3927 df-nul 4289 df-if 4484 df-pw 4560 df-sn 4586 df-pr 4588 df-op 4592 df-uni 4868 df-int 4908 df-br 5105 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-ord 6352 df-on 6353 df-fun 6527 df-fn 6528 df-f 6529 df-f1 6530 df-fo 6531 df-f1o 6532 df-en 8932 df-card 9913 |
| This theorem is referenced by: oncardval 9929 oncardid 9930 cardnn 9937 iscard 9949 carduni 9955 nnsdomel 9964 harsdom 9969 harsucnn 9972 pm54.43lem 9974 infxpenlem 9985 infxpidm2 9989 onssnum 10012 alephnbtwn 10043 alephnbtwn2 10044 alephordilem1 10045 alephord2 10048 alephsdom 10058 cardaleph 10061 infenaleph 10063 alephinit 10067 iunfictbso 10086 ficardun2 10173 pwsdompw 10174 infunsdom1 10183 ackbij2 10213 cfflb 10231 sdom2en01 10274 fin23lem22 10299 iunctb 10547 alephadd 10550 alephmul 10551 alephexp1 10552 alephsuc3 10553 canthp1lem2 10626 pwfseqlem4a 10634 pwfseqlem4 10635 pwfseqlem5 10636 gchaleph 10644 gchaleph2 10645 hargch 10646 cygctb 19950 ttac 43620 numinfctb 43687 isnumbasgrplem2 43688 isnumbasabl 43690 iscard4 44116 minregex2 44118 harval3 44121 harval3on 44122 aleph1min 44140 |
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