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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 7873 | . 2 ⊢ (𝐴 ∈ On → 𝐴 ≈ 𝐴) | |
2 | isnumi 8655 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐴 ≈ 𝐴) → 𝐴 ∈ dom card) | |
3 | 1, 2 | mpdan 699 | 1 ⊢ (𝐴 ∈ On → 𝐴 ∈ dom card) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 1977 class class class wbr 4583 dom cdm 5038 Oncon0 5640 ≈ cen 7838 cardccrd 8644 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 |
This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-ral 2901 df-rex 2902 df-rab 2905 df-v 3175 df-sbc 3403 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-ord 5643 df-on 5644 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-en 7842 df-card 8648 |
This theorem is referenced by: oncardval 8664 oncardid 8665 cardnn 8672 iscard 8684 carduni 8690 nnsdomel 8699 harsdom 8704 pm54.43lem 8708 infxpenlem 8719 infxpidm2 8723 onssnum 8746 alephnbtwn 8777 alephnbtwn2 8778 alephordilem1 8779 alephord2 8782 alephsdom 8792 cardaleph 8795 infenaleph 8797 alephinit 8801 iunfictbso 8820 ficardun2 8908 pwsdompw 8909 infunsdom1 8918 ackbij2 8948 cfflb 8964 sdom2en01 9007 fin23lem22 9032 iunctb 9275 alephadd 9278 alephmul 9279 alephexp1 9280 alephsuc3 9281 canthp1lem2 9354 pwfseqlem4a 9362 pwfseqlem4 9363 pwfseqlem5 9364 gchaleph 9372 gchaleph2 9373 hargch 9374 cygctb 18116 ttac 36621 numinfctb 36692 isnumbasgrplem2 36693 isnumbasabl 36695 |
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