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Theorem mopnset 14569
Description: Getting a set by applying  MetOpen. (Contributed by Jim Kingdon, 24-Sep-2025.)
Assertion
Ref Expression
mopnset  |-  ( D  e.  V  ->  ( MetOpen
`  D )  e. 
_V )

Proof of Theorem mopnset
Dummy variable  d is distinct from all other variables.
StepHypRef Expression
1 blfn 14568 . . . . . 6  |-  ball  Fn  _V
2 vex 2805 . . . . . 6  |-  d  e. 
_V
3 funfvex 5656 . . . . . . 7  |-  ( ( Fun  ball  /\  d  e.  dom  ball )  ->  ( ball `  d )  e. 
_V )
43funfni 5432 . . . . . 6  |-  ( (
ball  Fn  _V  /\  d  e.  _V )  ->  ( ball `  d )  e. 
_V )
51, 2, 4mp2an 426 . . . . 5  |-  ( ball `  d )  e.  _V
65rnex 5000 . . . 4  |-  ran  ( ball `  d )  e. 
_V
7 tgvalex 13348 . . . 4  |-  ( ran  ( ball `  d
)  e.  _V  ->  (
topGen `  ran  ( ball `  d ) )  e. 
_V )
86, 7ax-mp 5 . . 3  |-  ( topGen ` 
ran  ( ball `  d
) )  e.  _V
98ax-gen 1497 . 2  |-  A. d
( topGen `  ran  ( ball `  d ) )  e. 
_V
10 df-mopn 14564 . . 3  |-  MetOpen  =  ( d  e.  U. ran  *Met  |->  ( topGen `  ran  ( ball `  d )
) )
1110mptfvex 5732 . 2  |-  ( ( A. d ( topGen ` 
ran  ( ball `  d
) )  e.  _V  /\  D  e.  V )  ->  ( MetOpen `  D
)  e.  _V )
129, 11mpan 424 1  |-  ( D  e.  V  ->  ( MetOpen
`  D )  e. 
_V )
Colors of variables: wff set class
Syntax hints:    -> wi 4   A.wal 1395    e. wcel 2202   _Vcvv 2802   U.cuni 3893   ran crn 4726    Fn wfn 5321   ` cfv 5326   topGenctg 13339   *Metcxmet 14553   ballcbl 14555   MetOpencmopn 14558
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-coll 4204  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530  ax-cnex 8123  ax-resscn 8124
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ral 2515  df-rex 2516  df-reu 2517  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-iun 3972  df-br 4089  df-opab 4151  df-mpt 4152  df-id 4390  df-xp 4731  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-res 4737  df-ima 4738  df-iota 5286  df-fun 5328  df-fn 5329  df-f 5330  df-f1 5331  df-fo 5332  df-f1o 5333  df-fv 5334  df-oprab 6022  df-mpo 6023  df-1st 6303  df-2nd 6304  df-pnf 8216  df-mnf 8217  df-xr 8218  df-topgen 13345  df-bl 14563  df-mopn 14564
This theorem is referenced by:  cntopex  14571
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