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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 8958 | . 2 ⊢ (𝐴 ∈ On → 𝐴 ≈ 𝐴) | |
| 2 | isnumi 9897 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐴 ≈ 𝐴) → 𝐴 ∈ dom card) | |
| 3 | 1, 2 | mpdan 697 | 1 ⊢ (𝐴 ∈ On → 𝐴 ∈ dom card) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2141 class class class wbr 5097 dom cdm 5643 Oncon0 6340 ≈ cen 8917 cardccrd 9886 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1814 ax-4 1828 ax-5 1929 ax-6 1986 ax-7 2027 ax-8 2143 ax-9 2151 ax-10 2174 ax-11 2190 ax-12 2211 ax-ext 2733 ax-sep 5243 ax-pow 5319 ax-pr 5387 ax-un 7712 |
| This theorem depends on definitions: df-bi 209 df-an 400 df-or 859 df-3or 1098 df-3an 1099 df-tru 1562 df-fal 1572 df-ex 1799 df-nf 1803 df-sb 2090 df-mo 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3076 df-rex 3086 df-rab 3414 df-v 3455 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-pss 3922 df-nul 4284 df-if 4478 df-pw 4554 df-sn 4580 df-pr 4582 df-op 4586 df-uni 4863 df-int 4903 df-br 5098 df-opab 5160 df-mpt 5179 df-tr 5205 df-id 5538 df-eprel 5543 df-po 5551 df-so 5552 df-fr 5596 df-we 5598 df-xp 5649 df-rel 5650 df-cnv 5651 df-co 5652 df-dm 5653 df-rn 5654 df-res 5655 df-ima 5656 df-ord 6343 df-on 6344 df-fun 6517 df-fn 6518 df-f 6519 df-f1 6520 df-fo 6521 df-f1o 6522 df-en 8921 df-card 9890 |
| This theorem is referenced by: oncardval 9906 oncardid 9907 cardnn 9914 iscard 9926 carduni 9932 nnsdomel 9941 harsdom 9946 harsucnn 9949 pm54.43lem 9951 infxpenlem 9962 infxpidm2 9966 onssnum 9989 alephnbtwn 10020 alephnbtwn2 10021 alephordilem1 10022 alephord2 10025 alephsdom 10035 cardaleph 10038 infenaleph 10040 alephinit 10044 iunfictbso 10063 ficardun2 10151 pwsdompw 10152 infunsdom1 10161 ackbij2 10191 cfflb 10209 sdom2en01 10252 fin23lem22 10277 iunctb 10525 alephadd 10528 alephmul 10529 alephexp1 10530 alephsuc3 10531 canthp1lem2 10604 pwfseqlem4a 10612 pwfseqlem4 10613 pwfseqlem5 10614 gchaleph 10622 gchaleph2 10623 hargch 10624 cygctb 19922 ttac 43573 numinfctb 43640 isnumbasgrplem2 43641 isnumbasabl 43643 iscard4 44069 minregex2 44071 harval3 44074 harval3on 44075 aleph1min 44093 |
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