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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 5666 | . 2 ⊢ ran 𝐴 = dom ◡𝐴 | |
| 2 | cnvfi 9170 | . . 3 ⊢ (𝐴 ∈ Fin → ◡𝐴 ∈ Fin) | |
| 3 | dmfi 9302 | . . 3 ⊢ (◡𝐴 ∈ Fin → dom ◡𝐴 ∈ Fin) | |
| 4 | 2, 3 | syl 18 | . 2 ⊢ (𝐴 ∈ Fin → dom ◡𝐴 ∈ Fin) |
| 5 | 1, 4 | eqeltrid 2864 | 1 ⊢ (𝐴 ∈ Fin → ran 𝐴 ∈ Fin) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 ◡ccnv 5654 dom cdm 5655 ran crn 5656 Fincfn 8952 |
| 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 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2213 ax-ext 2732 ax-sep 5251 ax-nul 5263 ax-pow 5330 ax-pr 5398 ax-un 7736 |
| 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 2564 df-eu 2594 df-clab 2739 df-cleq 2752 df-clel 2835 df-nfc 2909 df-ne 2956 df-ral 3077 df-rex 3087 df-reu 3366 df-rab 3413 df-v 3452 df-sbc 3740 df-dif 3902 df-un 3904 df-in 3906 df-ss 3916 df-pss 3919 df-nul 4280 df-if 4483 df-pw 4559 df-sn 4585 df-pr 4587 df-op 4591 df-uni 4868 df-br 5104 df-opab 5168 df-mpt 5187 df-tr 5213 df-id 5550 df-eprel 5555 df-po 5563 df-so 5564 df-fr 5608 df-we 5610 df-xp 5661 df-rel 5662 df-cnv 5663 df-co 5664 df-dm 5665 df-rn 5666 df-res 5667 df-ima 5668 df-ord 6360 df-on 6361 df-lim 6362 df-suc 6363 df-iota 6489 df-fun 6535 df-fn 6536 df-f 6537 df-f1 6538 df-fo 6539 df-f1o 6540 df-fv 6541 df-om 7863 df-1st 7986 df-2nd 7987 df-1o 8455 df-en 8953 df-dom 8954 df-fin 8956 |
| This theorem is used by: f1dmvrnfibi 9308 unirnffid 9314 abrexfi 9319 imafi2 9328 gsum2dlem1 20097 gsum2dlem2 20098 tsmsxplem1 24379 prdsmet 24596 itg1addlem4 25927 relfi 33075 elrgspnsubrunlem1 33687 elrgspnsubrunlem2 33688 cmpcref 34360 carsggect 34829 carsgclctunlem2 34830 carsgclctunlem3 34831 breprexplema 35138 ptrecube 38369 heicant 38404 mblfinlem1 38406 ftc1anclem3 38444 istotbnd3 38521 sstotbnd2 38524 sstotbnd 38525 totbndbnd 38539 cantnfub 44162 cantnfub2 44163 rnmptfi 46003 rnffi 46007 choicefi 46031 stoweidlem39 46867 stoweidlem59 46887 fourierdlem31 46966 fourierdlem42 46977 fourierdlem54 46988 aacllem 50772 |
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