| Metamath Proof Explorer |
< Previous
Next >
Nearby theorems |
||
| 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 8933 | . 2 ⊢ (𝐴 ∈ On → 𝐴 ≈ 𝐴) | |
| 2 | isnumi 9870 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐴 ≈ 𝐴) → 𝐴 ∈ dom card) | |
| 3 | 1, 2 | mpdan 688 | 1 ⊢ (𝐴 ∈ On → 𝐴 ∈ dom card) |
| Colors of variables: wff setvar class |
| Syntax hints: → wi 4 ∈ wcel 2114 class class class wbr 5100 dom cdm 5632 Oncon0 6325 ≈ cen 8892 cardccrd 9859 |
| This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1797 ax-4 1811 ax-5 1912 ax-6 1969 ax-7 2010 ax-8 2116 ax-9 2124 ax-10 2147 ax-11 2163 ax-12 2185 ax-ext 2709 ax-sep 5243 ax-pow 5312 ax-pr 5379 ax-un 7690 |
| This theorem depends on definitions: df-bi 207 df-an 396 df-or 849 df-3or 1088 df-3an 1089 df-tru 1545 df-fal 1555 df-ex 1782 df-nf 1786 df-sb 2069 df-mo 2540 df-eu 2570 df-clab 2716 df-cleq 2729 df-clel 2812 df-nfc 2886 df-ne 2934 df-ral 3053 df-rex 3063 df-rab 3402 df-v 3444 df-dif 3906 df-un 3908 df-in 3910 df-ss 3920 df-pss 3923 df-nul 4288 df-if 4482 df-pw 4558 df-sn 4583 df-pr 4585 df-op 4589 df-uni 4866 df-int 4905 df-br 5101 df-opab 5163 df-mpt 5182 df-tr 5208 df-id 5527 df-eprel 5532 df-po 5540 df-so 5541 df-fr 5585 df-we 5587 df-xp 5638 df-rel 5639 df-cnv 5640 df-co 5641 df-dm 5642 df-rn 5643 df-res 5644 df-ima 5645 df-ord 6328 df-on 6329 df-fun 6502 df-fn 6503 df-f 6504 df-f1 6505 df-fo 6506 df-f1o 6507 df-en 8896 df-card 9863 |
| This theorem is referenced by: oncardval 9879 oncardid 9880 cardnn 9887 iscard 9899 carduni 9905 nnsdomel 9914 harsdom 9919 harsucnn 9922 pm54.43lem 9924 infxpenlem 9935 infxpidm2 9939 onssnum 9962 alephnbtwn 9993 alephnbtwn2 9994 alephordilem1 9995 alephord2 9998 alephsdom 10008 cardaleph 10011 infenaleph 10013 alephinit 10017 iunfictbso 10036 ficardun2 10124 pwsdompw 10125 infunsdom1 10134 ackbij2 10164 cfflb 10181 sdom2en01 10224 fin23lem22 10249 iunctb 10497 alephadd 10500 alephmul 10501 alephexp1 10502 alephsuc3 10503 canthp1lem2 10576 pwfseqlem4a 10584 pwfseqlem4 10585 pwfseqlem5 10586 gchaleph 10594 gchaleph2 10595 hargch 10596 cygctb 19833 ttac 43390 numinfctb 43457 isnumbasgrplem2 43458 isnumbasabl 43460 iscard4 43886 minregex2 43888 harval3 43891 harval3on 43892 aleph1min 43910 |
| Copyright terms: Public domain | W3C validator |