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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 8928 | . 2 ⊢ (𝐴 ∈ On → 𝐴 ≈ 𝐴) | |
| 2 | isnumi 9868 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐴 ≈ 𝐴) → 𝐴 ∈ dom card) | |
| 3 | 1, 2 | mpdan 693 | 1 ⊢ (𝐴 ∈ On → 𝐴 ∈ dom card) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2119 class class class wbr 5079 dom cdm 5625 Oncon0 6317 ≈ cen 8887 cardccrd 9857 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1802 ax-4 1816 ax-5 1917 ax-6 1974 ax-7 2015 ax-8 2121 ax-9 2129 ax-10 2152 ax-11 2168 ax-12 2189 ax-ext 2712 ax-sep 5225 ax-pow 5301 ax-pr 5369 ax-un 7685 |
| This theorem depends on definitions: df-bi 208 df-an 397 df-or 854 df-3or 1093 df-3an 1094 df-tru 1550 df-fal 1560 df-ex 1787 df-nf 1791 df-sb 2074 df-mo 2543 df-eu 2573 df-clab 2719 df-cleq 2732 df-clel 2815 df-nfc 2889 df-ne 2936 df-ral 3055 df-rex 3065 df-rab 3393 df-v 3434 df-dif 3893 df-un 3895 df-in 3897 df-ss 3907 df-pss 3910 df-nul 4269 df-if 4462 df-pw 4538 df-sn 4563 df-pr 4565 df-op 4569 df-uni 4846 df-int 4885 df-br 5080 df-opab 5142 df-mpt 5161 df-tr 5187 df-id 5520 df-eprel 5525 df-po 5533 df-so 5534 df-fr 5578 df-we 5580 df-xp 5631 df-rel 5632 df-cnv 5633 df-co 5634 df-dm 5635 df-rn 5636 df-res 5637 df-ima 5638 df-ord 6320 df-on 6321 df-fun 6494 df-fn 6495 df-f 6496 df-f1 6497 df-fo 6498 df-f1o 6499 df-en 8891 df-card 9861 |
| This theorem is referenced by: oncardval 9877 oncardid 9878 cardnn 9885 iscard 9897 carduni 9903 nnsdomel 9912 harsdom 9917 harsucnn 9920 pm54.43lem 9922 infxpenlem 9933 infxpidm2 9937 onssnum 9960 alephnbtwn 9991 alephnbtwn2 9992 alephordilem1 9993 alephord2 9996 alephsdom 10006 cardaleph 10009 infenaleph 10011 alephinit 10015 iunfictbso 10034 ficardun2 10122 pwsdompw 10123 infunsdom1 10132 ackbij2 10162 cfflb 10179 sdom2en01 10222 fin23lem22 10247 iunctb 10495 alephadd 10498 alephmul 10499 alephexp1 10500 alephsuc3 10501 canthp1lem2 10574 pwfseqlem4a 10582 pwfseqlem4 10583 pwfseqlem5 10584 gchaleph 10592 gchaleph2 10593 hargch 10594 cygctb 19865 ttac 43488 numinfctb 43555 isnumbasgrplem2 43556 isnumbasabl 43558 iscard4 43984 minregex2 43986 harval3 43989 harval3on 43990 aleph1min 44008 |
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