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Mirrors > Home > MPE Home > Th. List > rnfi | Structured version Visualization version GIF version |
Description: The range of a finite set is finite. (Contributed by Mario Carneiro, 28-Dec-2014.) |
Ref | Expression |
---|---|
rnfi | ⊢ (𝐴 ∈ Fin → ran 𝐴 ∈ Fin) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | df-rn 5591 | . 2 ⊢ ran 𝐴 = dom ◡𝐴 | |
2 | cnvfi 8924 | . . 3 ⊢ (𝐴 ∈ Fin → ◡𝐴 ∈ Fin) | |
3 | dmfi 9027 | . . 3 ⊢ (◡𝐴 ∈ Fin → dom ◡𝐴 ∈ Fin) | |
4 | 2, 3 | syl 17 | . 2 ⊢ (𝐴 ∈ Fin → dom ◡𝐴 ∈ Fin) |
5 | 1, 4 | eqeltrid 2843 | 1 ⊢ (𝐴 ∈ Fin → ran 𝐴 ∈ Fin) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2108 ◡ccnv 5579 dom cdm 5580 ran crn 5581 Fincfn 8691 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1799 ax-4 1813 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2110 ax-9 2118 ax-10 2139 ax-11 2156 ax-12 2173 ax-ext 2709 ax-sep 5218 ax-nul 5225 ax-pow 5283 ax-pr 5347 ax-un 7566 |
This theorem depends on definitions: df-bi 206 df-an 396 df-or 844 df-3or 1086 df-3an 1087 df-tru 1542 df-fal 1552 df-ex 1784 df-nf 1788 df-sb 2069 df-mo 2540 df-eu 2569 df-clab 2716 df-cleq 2730 df-clel 2817 df-nfc 2888 df-ne 2943 df-ral 3068 df-rex 3069 df-reu 3070 df-rab 3072 df-v 3424 df-sbc 3712 df-dif 3886 df-un 3888 df-in 3890 df-ss 3900 df-pss 3902 df-nul 4254 df-if 4457 df-pw 4532 df-sn 4559 df-pr 4561 df-tp 4563 df-op 4565 df-uni 4837 df-br 5071 df-opab 5133 df-mpt 5154 df-tr 5188 df-id 5480 df-eprel 5486 df-po 5494 df-so 5495 df-fr 5535 df-we 5537 df-xp 5586 df-rel 5587 df-cnv 5588 df-co 5589 df-dm 5590 df-rn 5591 df-res 5592 df-ima 5593 df-ord 6254 df-on 6255 df-lim 6256 df-suc 6257 df-iota 6376 df-fun 6420 df-fn 6421 df-f 6422 df-f1 6423 df-fo 6424 df-f1o 6425 df-fv 6426 df-om 7688 df-1st 7804 df-2nd 7805 df-1o 8267 df-er 8456 df-en 8692 df-dom 8693 df-fin 8695 |
This theorem is referenced by: f1dmvrnfibi 9033 unirnffid 9041 abrexfi 9049 gsum2dlem1 19486 gsum2dlem2 19487 tsmsxplem1 23212 prdsmet 23431 itg1addlem4 24768 relfi 30842 imafi2 30948 cmpcref 31702 carsggect 32185 carsgclctunlem2 32186 carsgclctunlem3 32187 breprexplema 32510 ptrecube 35704 heicant 35739 mblfinlem1 35741 ftc1anclem3 35779 istotbnd3 35856 sstotbnd2 35859 sstotbnd 35860 totbndbnd 35874 rnmptfi 42596 rnffi 42600 choicefi 42629 stoweidlem39 43470 stoweidlem59 43490 fourierdlem31 43569 fourierdlem42 43580 fourierdlem54 43591 aacllem 46391 |
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