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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 5661 | . 2 ⊢ ran 𝐴 = dom ◡𝐴 | |
| 2 | cnvfi 9195 | . . 3 ⊢ (𝐴 ∈ Fin → ◡𝐴 ∈ Fin) | |
| 3 | dmfi 9328 | . . 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 2144 ◡ccnv 5649 dom cdm 5650 ran crn 5651 Fincfn 8977 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1827 ax-4 1841 ax-5 1942 ax-6 1999 ax-7 2040 ax-8 2146 ax-9 2154 ax-10 2177 ax-11 2193 ax-12 2212 ax-ext 2732 ax-sep 5248 ax-nul 5259 ax-pow 5326 ax-pr 5390 ax-un 7752 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1572 df-fal 1582 df-ex 1812 df-nf 1816 df-sb 2099 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 3739 df-ss 3896 df-pss 4014 df-dif 4047 df-in 4091 df-un 4151 df-nul 4279 df-if 4482 df-pw 4558 df-sn 4585 df-pr 4587 df-op 4835 df-uni 4867 df-br 5103 df-opab 5167 df-mpt 5186 df-tr 5212 df-id 5545 df-eprel 5550 df-po 5558 df-so 5559 df-fr 5603 df-we 5605 df-xp 5656 df-rel 5657 df-cnv 5658 df-co 5659 df-dm 5660 df-rn 5661 df-res 5662 df-ima 5663 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6494 df-fun 6541 df-fn 6542 df-f 6543 df-f1 6544 df-fo 6545 df-f1o 6546 df-fv 6547 df-om 7879 df-1st 8002 df-2nd 8003 df-1o 8480 df-en 8978 df-dom 8979 df-fin 8981 |
| This theorem is used by: f1dmvrnfibi 9334 unirnffid 9340 abrexfi 9345 imafi2 9354 gsum2dlem1 20190 gsum2dlem2 20191 tsmsxplem1 24478 prdsmet 24695 itg1addlem4 26026 relfi 33244 elrgspnsubrunlem1 33855 elrgspnsubrunlem2 33856 cmpcref 34529 carsggect 34997 carsgclctunlem2 34998 carsgclctunlem3 34999 breprexplema 35306 ptrecube 38632 heicant 38667 mblfinlem1 38669 ftc1anclem3 38707 istotbnd3 38799 sstotbnd2 38802 sstotbnd 38803 totbndbnd 38817 cantnfub 44417 cantnfub2 44418 rnmptfi 46280 rnffi 46284 choicefi 46308 stoweidlem39 47143 stoweidlem59 47163 fourierdlem31 47242 fourierdlem42 47253 fourierdlem54 47264 aacllem 51108 |
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