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| Description: If the domain of a mapping is a set, the function is a set. |
| Ref | Expression |
|---|---|
| fex |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | fnex 3607 |
. 2
| |
| 2 | ffn 3627 |
. 2
| |
| 3 | 1, 2 | sylan 448 |
1
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| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: elmapg 4333 f1domg 4396 fodomfiOLD 4566 fodom 4798 addex 5317 mulex 5318 ser1ft 6328 ser1cl1 6330 ser1recl 6331 ser1ref 6332 ser1mono 6337 ser1add2 6338 ser1add 6339 serzcl1 6562 ser0cl1 6564 ser0f 6565 ser1absdiflem 6929 serzref 7051 serzmulc 7058 ser0mulc 7059 ser1mulc 7060 climfnn 7092 caucvg3a 7164 caucvg3lem 7166 ser1f0 7170 ser1cmp 7174 ser1cmp2 7177 isumsplit 7216 isum0split 7217 elcncf 7265 ruclem5 7514 ismeti 7802 metcn4i 7972 isgrpi 8042 isgrp2i 8076 vcoprne 8198 isvc 8200 isnv 8231 cnnvnm 8312 abscn 8343 islno 8414 hvmulex 8881 hhph 9045 hcau 9051 hlim2 9060 chlim 9104 hhssnm 9131 hhsssh2 9140 elcnopt 9783 ellnopt 9784 elunopt 9799 elhmopt 9800 elcnfnt 9809 ellnfnt 9810 adjvalt 9814 adjeqt 9859 leoprf2t 10060 stelt 10141 hstelt 10142 elghomlem2 10383 elsymgrn 10401 mapdiscn 10511 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 962 ax-gen 963 ax-8 964 ax-10 966 ax-11 967 ax-12 968 ax-13 969 ax-14 970 ax-17 971 ax-4 973 ax-5o 975 ax-6o 978 ax-9o 1123 ax-10o 1140 ax-16 1210 ax-11o 1218 ax-ext 1459 ax-rep 2693 ax-sep 2703 ax-pow 2742 ax-pr 2779 ax-un 2866 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 981 df-sb 1172 df-eu 1382 df-mo 1383 df-clab 1464 df-cleq 1469 df-clel 1472 df-ne 1587 df-rex 1650 df-v 1812 df-dif 2049 df-un 2050 df-in 2051 df-ss 2053 df-nul 2281 df-pw 2402 df-sn 2412 df-pr 2413 df-op 2416 df-uni 2504 df-br 2620 df-opab 2667 df-id 2835 df-xp 3184 df-rel 3185 df-cnv 3186 df-co 3187 df-dm 3188 df-rn 3189 df-res 3190 df-ima 3191 df-fun 3192 df-fn 3193 df-f 3194 |