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| Description: If the domain of a function given by maps-to notation is a set, the function is a set. (Contributed by FL, 6-Jun-2011.) |
| Ref | Expression |
|---|---|
| mptexg |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | df-mpt 5138 |
. 2
| |
| 2 | opabex2g 4675 |
. 2
| |
| 3 | 1, 2 | syl5eqel 2251 |
1
|
| Colors of variables: wff set class |
| Syntax hints: |
| This theorem is referenced by: unxpdomlem3 5863 noinfep 6027 coftr 6355 axcc3 6362 axcc3OLD 6364 axdc2lem 6374 axcclem 6383 konigthlem 6504 konigthlemOLD 6506 rpnnen1lem1 9289 rpnnen1lem3 9291 rpnnen1lem5 9293 rpnnen2lem1 9295 rpnnen2lem2 9296 rpnnen2lem3 9297 rpnnen2lem9 9303 grpinvfval 9640 lubfval 9722 glbfval 9727 circumlem2 14643 cbicplem 15508 grphmlem0 16029 grphmlem1 16030 grphlem3 16032 grphm 16035 ocvfval 18186 pmapfval 18460 polfval 18593 watfval 18677 ldilfset 18742 ltrnfset 18751 dilfset 18783 trnfset 18786 trlfset 18791 trlset 18792 tgrpfset 19416 tendofset 19428 tendopl 19441 tendoi 19456 edringfset 19458 |
| This theorem was proved from axioms: ax-1 4 ax-2 5 ax-3 6 ax-mp 7 ax-7 1621 ax-gen 1622 ax-8 1623 ax-9 1624 ax-10 1625 ax-11 1626 ax-12 1627 ax-13 1628 ax-14 1629 ax-17 1634 ax-4 1637 ax-5o 1639 ax-6o 1642 ax-9o 1792 ax-10o 1810 ax-16 1883 ax-11o 1893 ax-ext 2152 ax-rep 3628 ax-sep 3638 ax-nul 3645 ax-pow 3681 ax-pr 3719 ax-un 3961 |
| This theorem depends on definitions: df-bi 232 df-or 434 df-an 435 df-ex 1645 df-sb 1845 df-eu 2070 df-mo 2071 df-clab 2158 df-cleq 2163 df-clel 2166 df-ne 2297 df-rex 2390 df-v 2571 df-dif 2862 df-un 2864 df-in 2866 df-ss 2868 df-nul 3115 df-pw 3261 df-sn 3274 df-pr 3275 df-op 3278 df-uni 3399 df-br 3540 df-opab 3598 df-id 3779 df-xp 4165 df-rel 4166 df-cnv 4167 df-co 4168 df-dm 4169 df-rn 4170 df-res 4171 df-ima 4172 df-fun 4173 df-fn 4174 df-mpt 5138 |