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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 5566 | . 2 ⊢ ran 𝐴 = dom ◡𝐴 | |
2 | cnvfi 8806 | . . 3 ⊢ (𝐴 ∈ Fin → ◡𝐴 ∈ Fin) | |
3 | dmfi 8802 | . . 3 ⊢ (◡𝐴 ∈ Fin → dom ◡𝐴 ∈ Fin) | |
4 | 2, 3 | syl 17 | . 2 ⊢ (𝐴 ∈ Fin → dom ◡𝐴 ∈ Fin) |
5 | 1, 4 | eqeltrid 2917 | 1 ⊢ (𝐴 ∈ Fin → ran 𝐴 ∈ Fin) |
Colors of variables: wff setvar class |
Syntax hints: → wi 4 ∈ wcel 2114 ◡ccnv 5554 dom cdm 5555 ran crn 5556 Fincfn 8509 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-ral 3143 df-rex 3144 df-reu 3145 df-rab 3147 df-v 3496 df-sbc 3773 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4839 df-br 5067 df-opab 5129 df-mpt 5147 df-tr 5173 df-id 5460 df-eprel 5465 df-po 5474 df-so 5475 df-fr 5514 df-we 5516 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-fv 6363 df-om 7581 df-1st 7689 df-2nd 7690 df-1o 8102 df-er 8289 df-en 8510 df-dom 8511 df-fin 8513 |
This theorem is referenced by: f1dmvrnfibi 8808 unirnffid 8816 abrexfi 8824 gsum2dlem1 19090 gsum2dlem2 19091 tsmsxplem1 22761 prdsmet 22980 relfi 30352 imafi2 30447 cmpcref 31114 carsggect 31576 carsgclctunlem2 31577 carsgclctunlem3 31578 breprexplema 31901 ptrecube 34907 heicant 34942 mblfinlem1 34944 ftc1anclem3 34984 istotbnd3 35064 sstotbnd2 35067 sstotbnd 35068 totbndbnd 35082 rnmptfi 41447 rnffi 41451 choicefi 41483 stoweidlem39 42344 stoweidlem59 42364 fourierdlem31 42443 fourierdlem42 42454 fourierdlem54 42465 aacllem 44922 |
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