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Mirrors > Home > MPE Home > Th. List > cardon | Structured version Visualization version GIF version |
Description: The cardinal number of a set is an ordinal number. Proposition 10.6(1) of [TakeutiZaring] p. 85. (Contributed by Mario Carneiro, 7-Jan-2013.) (Revised by Mario Carneiro, 13-Sep-2013.) |
Ref | Expression |
---|---|
cardon | β’ (cardβπ΄) β On |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cardf2 9940 | . 2 β’ card:{π₯ β£ βπ¦ β On π¦ β π₯}βΆOn | |
2 | 0elon 6417 | . 2 β’ β β On | |
3 | 1, 2 | f0cli 7098 | 1 β’ (cardβπ΄) β On |
Colors of variables: wff setvar class |
Syntax hints: β wcel 2104 {cab 2707 βwrex 3068 class class class wbr 5147 Oncon0 6363 βcfv 6542 β cen 8938 cardccrd 9932 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1911 ax-6 1969 ax-7 2009 ax-8 2106 ax-9 2114 ax-10 2135 ax-11 2152 ax-12 2169 ax-ext 2701 ax-sep 5298 ax-nul 5305 ax-pr 5426 |
This theorem depends on definitions: df-bi 206 df-an 395 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2532 df-eu 2561 df-clab 2708 df-cleq 2722 df-clel 2808 df-nfc 2883 df-ne 2939 df-ral 3060 df-rex 3069 df-rab 3431 df-v 3474 df-dif 3950 df-un 3952 df-in 3954 df-ss 3964 df-pss 3966 df-nul 4322 df-if 4528 df-pw 4603 df-sn 4628 df-pr 4630 df-op 4634 df-uni 4908 df-int 4950 df-br 5148 df-opab 5210 df-mpt 5231 df-tr 5265 df-id 5573 df-eprel 5579 df-po 5587 df-so 5588 df-fr 5630 df-we 5632 df-xp 5681 df-rel 5682 df-cnv 5683 df-co 5684 df-dm 5685 df-rn 5686 df-res 5687 df-ima 5688 df-ord 6366 df-on 6367 df-iota 6494 df-fun 6544 df-fn 6545 df-f 6546 df-fv 6550 df-card 9936 |
This theorem is referenced by: isnum3 9951 cardidm 9956 ficardom 9958 cardne 9962 carden2b 9964 cardlim 9969 cardsdomelir 9970 cardsdomel 9971 iscard 9972 iscard2 9973 carddom2 9974 carduni 9978 cardom 9983 cardsdom2 9985 domtri2 9986 cardval2 9988 infxpidm2 10014 dfac8b 10028 numdom 10035 indcardi 10038 alephnbtwn 10068 alephnbtwn2 10069 alephsucdom 10076 cardaleph 10086 iscard3 10090 alephinit 10092 alephsson 10097 alephval3 10107 dfac12r 10143 dfac12k 10144 cardadju 10191 djunum 10192 pwsdompw 10201 cff 10245 cardcf 10249 cfon 10252 cfeq0 10253 cfsuc 10254 cff1 10255 cfflb 10256 cflim2 10260 cfss 10262 fin1a2lem9 10405 ttukeylem6 10511 ttukeylem7 10512 unsnen 10550 inar1 10772 tskcard 10778 tskuni 10780 gruina 10815 iscard4 42586 minregex 42587 |
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