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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 3599 |
. 2
| |
| 2 | ffn 3619 |
. 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 4323 f1domg 4383 fodomfi 4546 fodom 4778 addex 5297 mulex 5298 ser1ft 6273 ser1cl1 6275 ser1recl 6276 ser1ref 6277 ser1mono 6282 ser1add2 6283 ser1add 6284 serzcl1 6502 ser0cl1 6504 ser0f 6505 ser1absdiflem 6874 serzref 6997 serzmulc 7004 ser0mulc 7005 ser1mulc 7006 climfnn 7038 caucvg3a 7108 caucvg3lem 7110 ser1f0 7114 ser1cmp 7118 ser1cmp2 7121 isumsplit 7159 isum0split 7160 elcncf 7208 ruclem5 7465 ismeti 7752 metcn4i 7922 isgrpi 7992 isgrp2i 8026 vcoprne 8150 isvc 8152 isnv 8183 cnnvnm 8263 abscn 8290 islno 8361 hvmulex 8820 hhph 8984 hcau 8990 hlim2 8999 chlim 9043 hhssnm 9070 hhsssh2 9079 elcnopt 9723 ellnopt 9724 elunopt 9739 elhmopt 9740 elcnfnt 9749 ellnfnt 9750 adjvalt 9754 adjeqt 9798 leoprf2t 9998 stelt 10079 hstelt 10080 elghomlem2 10317 elsymgrn 10335 mapdiscn 10434 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 960 ax-gen 961 ax-8 962 ax-10 964 ax-11 965 ax-12 966 ax-13 967 ax-14 968 ax-17 969 ax-4 971 ax-5o 973 ax-6o 976 ax-9o 1121 ax-10o 1138 ax-16 1208 ax-11o 1216 ax-ext 1457 ax-rep 2688 ax-sep 2698 ax-pow 2737 ax-pr 2774 ax-un 2861 |
| This theorem depends on definitions: df-bi 147 df-or 224 df-an 225 df-ex 979 df-sb 1170 df-eu 1380 df-mo 1381 df-clab 1462 df-cleq 1467 df-clel 1470 df-ne 1584 df-rex 1647 df-v 1808 df-dif 2045 df-un 2046 df-in 2047 df-ss 2049 df-nul 2277 df-pw 2398 df-sn 2408 df-pr 2409 df-op 2412 df-uni 2499 df-br 2615 df-opab 2662 df-id 2830 df-xp 3179 df-rel 3180 df-cnv 3181 df-co 3182 df-dm 3183 df-rn 3184 df-res 3185 df-ima 3186 df-fun 3187 df-fn 3188 df-f 3189 |