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Mirrors > Home > MPE Home > Th. List > fex | Structured version Visualization version Unicode version |
Description: If the domain of a mapping is a set, the function is a set. (Contributed by NM, 3-Oct-1999.) |
Ref | Expression |
---|---|
fex |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | ffn 6045 | . 2 | |
2 | fnex 6481 | . 2 | |
3 | 1, 2 | sylan 488 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wa 384 wcel 1990 cvv 3200 wfn 5883 wf 5884 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-rep 4771 ax-sep 4781 ax-nul 4789 ax-pr 4906 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-reu 2919 df-rab 2921 df-v 3202 df-sbc 3436 df-csb 3534 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-iun 4522 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-rn 5125 df-res 5126 df-ima 5127 df-iota 5851 df-fun 5890 df-fn 5891 df-f 5892 df-f1 5893 df-fo 5894 df-f1o 5895 df-fv 5896 |
This theorem is referenced by: f1oexrnex 7115 frnsuppeq 7307 suppsnop 7309 f1domg 7975 fdmfisuppfi 8284 frnfsuppbi 8304 fsuppco2 8308 fsuppcor 8309 mapfienlem2 8311 ordtypelem10 8432 oiexg 8440 cnfcom3clem 8602 infxpenc2lem2 8843 fin23lem32 9166 isf32lem10 9184 focdmex 13139 hasheqf1oi 13140 hashf1rn 13142 hashf1rnOLD 13143 hasheqf1od 13144 hashimarn 13227 hashf1lem1 13239 fz1isolem 13245 iswrd 13307 climsup 14400 fsum 14451 supcvg 14588 fprod 14671 vdwmc 15682 vdwpc 15684 ramval 15712 imasval 16171 imasle 16183 pwsco1mhm 17370 isghm 17660 elsymgbas 17802 gsumval3a 18304 gsumval3lem1 18306 gsumval3lem2 18307 gsumzres 18310 gsumzf1o 18313 gsumzaddlem 18321 gsumzadd 18322 gsumzmhm 18337 gsumzoppg 18344 gsumpt 18361 gsum2dlem2 18370 dmdprd 18397 prdslmodd 18969 gsumply1subr 19604 cnfldfun 19758 cnfldfunALT 19759 dsmmsubg 20087 dsmmlss 20088 islindf2 20153 f1lindf 20161 islindf4 20177 prdstps 21432 qtopval2 21499 tsmsres 21947 tngngp3 22460 climcncf 22703 itg2gt0 23527 ulmval 24134 pserulm 24176 jensen 24715 isismt 25429 isgrpoi 27352 isvcOLD 27434 isnv 27467 cnnvg 27533 cnnvs 27535 cnnvnm 27536 cncph 27674 ajval 27717 hvmulex 27868 hhph 28035 hlimi 28045 chlimi 28091 hhssva 28114 hhsssm 28115 hhssnm 28116 hhshsslem1 28124 elunop 28731 adjeq 28794 leoprf2 28986 fpwrelmapffslem 29507 lmdvg 29999 esumpfinvallem 30136 ofcfval4 30167 omsfval 30356 omsf 30358 omssubadd 30362 carsgval 30365 eulerpartgbij 30434 eulerpartlemmf 30437 sseqval 30450 subfacp1lem5 31166 sinccvglem 31566 elno 31799 filnetlem4 32376 bj-finsumval0 33147 poimirlem24 33433 mbfresfi 33456 elghomlem2OLD 33685 isrngod 33697 isgrpda 33754 iscringd 33797 islaut 35369 ispautN 35385 istendo 36048 binomcxplemnotnn0 38555 fexd 39296 fidmfisupp 39390 climexp 39837 climinf 39838 limsupre 39873 stirlinglem8 40298 fourierdlem70 40393 fourierdlem71 40394 fourierdlem80 40403 sge0val 40583 sge0f1o 40599 ismea 40668 meadjiunlem 40682 isomennd 40745 isassintop 41846 fdivmpt 42334 elbigolo1 42351 |
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