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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 5674 | . 2 ⊢ ran 𝐴 = dom ◡𝐴 | |
| 2 | cnvfi 9163 | . . 3 ⊢ (𝐴 ∈ Fin → ◡𝐴 ∈ Fin) | |
| 3 | dmfi 9295 | . . 3 ⊢ (◡𝐴 ∈ Fin → dom ◡𝐴 ∈ Fin) | |
| 4 | 2, 3 | syl 18 | . 2 ⊢ (𝐴 ∈ Fin → dom ◡𝐴 ∈ Fin) |
| 5 | 1, 4 | eqeltrid 2869 | 1 ⊢ (𝐴 ∈ Fin → ran 𝐴 ∈ Fin) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2146 ◡ccnv 5662 dom cdm 5663 ran crn 5664 Fincfn 8945 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2148 ax-9 2156 ax-10 2179 ax-11 2195 ax-12 2216 ax-ext 2737 ax-sep 5259 ax-nul 5271 ax-pow 5338 ax-pr 5406 ax-un 7738 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2569 df-eu 2599 df-clab 2744 df-cleq 2757 df-clel 2840 df-nfc 2914 df-ne 2961 df-ral 3082 df-rex 3092 df-reu 3372 df-rab 3419 df-v 3459 df-sbc 3747 df-dif 3909 df-un 3911 df-in 3913 df-ss 3923 df-pss 3926 df-nul 4287 df-if 4490 df-pw 4566 df-sn 4592 df-pr 4594 df-op 4598 df-uni 4875 df-br 5112 df-opab 5176 df-mpt 5195 df-tr 5221 df-id 5558 df-eprel 5563 df-po 5571 df-so 5572 df-fr 5616 df-we 5618 df-xp 5669 df-rel 5670 df-cnv 5671 df-co 5672 df-dm 5673 df-rn 5674 df-res 5675 df-ima 5676 df-ord 6367 df-on 6368 df-lim 6369 df-suc 6370 df-iota 6496 df-fun 6542 df-fn 6543 df-f 6544 df-f1 6545 df-fo 6546 df-f1o 6547 df-fv 6548 df-om 7865 df-1st 7988 df-2nd 7989 df-1o 8455 df-en 8946 df-dom 8947 df-fin 8949 |
| This theorem is used by: f1dmvrnfibi 9301 unirnffid 9307 abrexfi 9312 imafi2 9321 gsum2dlem1 20063 gsum2dlem2 20064 tsmsxplem1 24339 prdsmet 24556 itg1addlem4 25887 relfi 32976 elrgspnsubrunlem1 33590 elrgspnsubrunlem2 33591 cmpcref 34263 carsggect 34732 carsgclctunlem2 34733 carsgclctunlem3 34734 breprexplema 35041 ptrecube 38304 heicant 38339 mblfinlem1 38341 ftc1anclem3 38379 istotbnd3 38455 sstotbnd2 38458 sstotbnd 38459 totbndbnd 38473 cantnfub 44081 cantnfub2 44082 rnmptfi 45922 rnffi 45926 choicefi 45950 stoweidlem39 46786 stoweidlem59 46806 fourierdlem31 46885 fourierdlem42 46896 fourierdlem54 46907 aacllem 50654 |
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