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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 8931 | . 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 5085 dom cdm 5631 Oncon0 6323 ≈ cen 8890 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 2708 ax-sep 5231 ax-pow 5307 ax-pr 5375 ax-un 7689 |
| 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 2539 df-eu 2569 df-clab 2715 df-cleq 2728 df-clel 2811 df-nfc 2885 df-ne 2933 df-ral 3052 df-rex 3062 df-rab 3390 df-v 3431 df-dif 3892 df-un 3894 df-in 3896 df-ss 3906 df-pss 3909 df-nul 4274 df-if 4467 df-pw 4543 df-sn 4568 df-pr 4570 df-op 4574 df-uni 4851 df-int 4890 df-br 5086 df-opab 5148 df-mpt 5167 df-tr 5193 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-ord 6326 df-on 6327 df-fun 6500 df-fn 6501 df-f 6502 df-f1 6503 df-fo 6504 df-f1o 6505 df-en 8894 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 19867 ttac 43464 numinfctb 43531 isnumbasgrplem2 43532 isnumbasabl 43534 iscard4 43960 minregex2 43962 harval3 43965 harval3on 43966 aleph1min 43984 |
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