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Mirrors > Home > MPE Home > Th. List > finnum | Structured version Visualization version Unicode version |
Description: Every finite set is numerable. (Contributed by Mario Carneiro, 4-Feb-2013.) (Revised by Mario Carneiro, 29-Apr-2015.) |
Ref | Expression |
---|---|
finnum |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | isfi 7979 | . 2 | |
2 | nnon 7071 | . . . 4 | |
3 | ensym 8005 | . . . 4 | |
4 | isnumi 8772 | . . . 4 | |
5 | 2, 3, 4 | syl2an 494 | . . 3 |
6 | 5 | rexlimiva 3028 | . 2 |
7 | 1, 6 | sylbi 207 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wcel 1990 wrex 2913 class class class wbr 4653 cdm 5114 con0 5723 com 7065 cen 7952 cfn 7955 ccrd 8761 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3or 1038 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-pss 3590 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-tp 4182 df-op 4184 df-uni 4437 df-int 4476 df-br 4654 df-opab 4713 df-mpt 4730 df-tr 4753 df-id 5024 df-eprel 5029 df-po 5035 df-so 5036 df-fr 5073 df-we 5075 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-ord 5726 df-on 5727 df-lim 5728 df-suc 5729 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-om 7066 df-er 7742 df-en 7956 df-fin 7959 df-card 8765 |
This theorem is referenced by: ficardom 8787 ficardid 8788 fidomtri 8819 numwdom 8882 fodomfi2 8883 dfac12k 8969 ficardun 9024 ficardun2 9025 pwsdompw 9026 ackbij2 9065 sdom2en01 9124 dfacfin7 9221 fin1a2lem9 9230 domtriomlem 9264 zornn0g 9327 canthnum 9471 pwfseqlem4 9484 uzindi 12781 hashkf 13119 hashgval 13120 hashen 13135 hashdom 13168 symggen 17890 pgpfac1lem5 18478 fiufl 21720 finixpnum 33394 poimirlem32 33441 ttac 37603 |
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