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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 8541 | . 2 ⊢ (𝐴 ∈ On → 𝐴 ≈ 𝐴) | |
2 | isnumi 9375 | . 2 ⊢ ((𝐴 ∈ On ∧ 𝐴 ≈ 𝐴) → 𝐴 ∈ dom card) | |
3 | 1, 2 | mpdan 685 | 1 ⊢ (𝐴 ∈ On → 𝐴 ∈ dom card) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2114 class class class wbr 5066 dom cdm 5555 Oncon0 6191 ≈ cen 8506 cardccrd 9364 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-rab 3147 df-v 3496 df-sbc 3773 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4839 df-int 4877 df-br 5067 df-opab 5129 df-mpt 5147 df-tr 5173 df-id 5460 df-eprel 5465 df-po 5474 df-so 5475 df-fr 5514 df-we 5516 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-ord 6194 df-on 6195 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-en 8510 df-card 9368 |
This theorem is referenced by: oncardval 9384 oncardid 9385 cardnn 9392 iscard 9404 carduni 9410 nnsdomel 9419 harsdom 9424 pm54.43lem 9428 infxpenlem 9439 infxpidm2 9443 onssnum 9466 alephnbtwn 9497 alephnbtwn2 9498 alephordilem1 9499 alephord2 9502 alephsdom 9512 cardaleph 9515 infenaleph 9517 alephinit 9521 iunfictbso 9540 ficardun2 9625 pwsdompw 9626 infunsdom1 9635 ackbij2 9665 cfflb 9681 sdom2en01 9724 fin23lem22 9749 iunctb 9996 alephadd 9999 alephmul 10000 alephexp1 10001 alephsuc3 10002 canthp1lem2 10075 pwfseqlem4a 10083 pwfseqlem4 10084 pwfseqlem5 10085 gchaleph 10093 gchaleph2 10094 hargch 10095 cygctb 19012 ttac 39653 numinfctb 39723 isnumbasgrplem2 39724 isnumbasabl 39726 iscard4 39920 harsucnn 39923 harval3 39924 harval3on 39925 aleph1min 39936 |
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