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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 8913 | . 2 ⊢ (𝐴 ∈ On → 𝐴 ≈ 𝐴) | |
| 2 | isnumi 9846 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐴 ≈ 𝐴) → 𝐴 ∈ dom card) | |
| 3 | 1, 2 | mpdan 687 | 1 ⊢ (𝐴 ∈ On → 𝐴 ∈ dom card) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2113 class class class wbr 5093 dom cdm 5619 Oncon0 6311 ≈ cen 8872 cardccrd 9835 |
| 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 1968 ax-7 2009 ax-8 2115 ax-9 2123 ax-10 2146 ax-11 2162 ax-12 2182 ax-ext 2705 ax-sep 5236 ax-nul 5246 ax-pow 5305 ax-pr 5372 ax-un 7674 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1544 df-fal 1554 df-ex 1781 df-nf 1785 df-sb 2068 df-mo 2537 df-eu 2566 df-clab 2712 df-cleq 2725 df-clel 2808 df-nfc 2882 df-ne 2930 df-ral 3049 df-rex 3058 df-rab 3397 df-v 3439 df-dif 3901 df-un 3903 df-in 3905 df-ss 3915 df-pss 3918 df-nul 4283 df-if 4475 df-pw 4551 df-sn 4576 df-pr 4578 df-op 4582 df-uni 4859 df-int 4898 df-br 5094 df-opab 5156 df-mpt 5175 df-tr 5201 df-id 5514 df-eprel 5519 df-po 5527 df-so 5528 df-fr 5572 df-we 5574 df-xp 5625 df-rel 5626 df-cnv 5627 df-co 5628 df-dm 5629 df-rn 5630 df-res 5631 df-ima 5632 df-ord 6314 df-on 6315 df-fun 6488 df-fn 6489 df-f 6490 df-f1 6491 df-fo 6492 df-f1o 6493 df-en 8876 df-card 9839 |
| This theorem is referenced by: oncardval 9855 oncardid 9856 cardnn 9863 iscard 9875 carduni 9881 nnsdomel 9890 harsdom 9895 harsucnn 9898 pm54.43lem 9900 infxpenlem 9911 infxpidm2 9915 onssnum 9938 alephnbtwn 9969 alephnbtwn2 9970 alephordilem1 9971 alephord2 9974 alephsdom 9984 cardaleph 9987 infenaleph 9989 alephinit 9993 iunfictbso 10012 ficardun2 10100 pwsdompw 10101 infunsdom1 10110 ackbij2 10140 cfflb 10157 sdom2en01 10200 fin23lem22 10225 iunctb 10472 alephadd 10475 alephmul 10476 alephexp1 10477 alephsuc3 10478 canthp1lem2 10551 pwfseqlem4a 10559 pwfseqlem4 10560 pwfseqlem5 10561 gchaleph 10569 gchaleph2 10570 hargch 10571 cygctb 19806 ttac 43153 numinfctb 43220 isnumbasgrplem2 43221 isnumbasabl 43223 iscard4 43650 minregex2 43652 harval3 43655 harval3on 43656 aleph1min 43674 |
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