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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 5662 | . 2 ⊢ ran 𝐴 = dom ◡𝐴 | |
| 2 | cnvfi 9184 | . . 3 ⊢ (𝐴 ∈ Fin → ◡𝐴 ∈ Fin) | |
| 3 | dmfi 9317 | . . 3 ⊢ (◡𝐴 ∈ Fin → dom ◡𝐴 ∈ Fin) | |
| 4 | 2, 3 | syl 18 | . 2 ⊢ (𝐴 ∈ Fin → dom ◡𝐴 ∈ Fin) |
| 5 | 1, 4 | eqeltrid 2865 | 1 ⊢ (𝐴 ∈ Fin → ran 𝐴 ∈ Fin) |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: → wi 4 ∈ wcel 2145 ◡ccnv 5650 dom cdm 5651 ran crn 5652 Fincfn 8966 |
| 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 2733 ax-sep 5249 ax-nul 5260 ax-pow 5327 ax-pr 5391 ax-un 7749 |
| 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 2565 df-eu 2595 df-clab 2740 df-cleq 2753 df-clel 2836 df-nfc 2910 df-ne 2957 df-ral 3078 df-rex 3088 df-reu 3367 df-rab 3414 df-v 3453 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 5546 df-eprel 5551 df-po 5559 df-so 5560 df-fr 5604 df-we 5606 df-xp 5657 df-rel 5658 df-cnv 5659 df-co 5660 df-dm 5661 df-rn 5662 df-res 5663 df-ima 5664 df-ord 6364 df-on 6365 df-lim 6366 df-suc 6367 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-f1 6542 df-fo 6543 df-f1o 6544 df-fv 6545 df-om 7876 df-1st 7999 df-2nd 8000 df-1o 8469 df-en 8967 df-dom 8968 df-fin 8970 |
| This theorem is used by: f1dmvrnfibi 9323 unirnffid 9329 abrexfi 9334 imafi2 9343 gsum2dlem1 20177 gsum2dlem2 20178 tsmsxplem1 24465 prdsmet 24682 itg1addlem4 26013 relfi 33189 elrgspnsubrunlem1 33801 elrgspnsubrunlem2 33802 cmpcref 34475 carsggect 34943 carsgclctunlem2 34944 carsgclctunlem3 34945 breprexplema 35252 ptrecube 38518 heicant 38553 mblfinlem1 38555 ftc1anclem3 38593 istotbnd3 38685 sstotbnd2 38688 sstotbnd 38689 totbndbnd 38703 cantnfub 44307 cantnfub2 44308 rnmptfi 46155 rnffi 46159 choicefi 46183 stoweidlem39 47018 stoweidlem59 47038 fourierdlem31 47117 fourierdlem42 47128 fourierdlem54 47139 aacllem 50908 |
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