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Theorem rdgexggg 6542
Description: The recursive definition generator produces a set on a set input. (Contributed by Jim Kingdon, 4-Jul-2019.)
Assertion
Ref Expression
rdgexggg  |-  ( ( F  Fn  _V  /\  A  e.  V  /\  B  e.  W )  ->  ( rec ( F ,  A ) `  B )  e.  _V )

Proof of Theorem rdgexggg
Dummy variables  g  x  y are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 df-irdg 6535 . . 3  |-  rec ( F ,  A )  = recs ( ( g  e. 
_V  |->  ( A  u.  U_ x  e.  dom  g
( F `  (
g `  x )
) ) ) )
2 rdgruledefgg 6540 . . . 4  |-  ( ( F  Fn  _V  /\  A  e.  V )  ->  ( Fun  ( g  e.  _V  |->  ( A  u.  U_ x  e. 
dom  g ( F `
 ( g `  x ) ) ) )  /\  ( ( g  e.  _V  |->  ( A  u.  U_ x  e.  dom  g ( F `
 ( g `  x ) ) ) ) `  y )  e.  _V ) )
32alrimiv 1922 . . 3  |-  ( ( F  Fn  _V  /\  A  e.  V )  ->  A. y ( Fun  ( g  e.  _V  |->  ( A  u.  U_ x  e.  dom  g ( F `
 ( g `  x ) ) ) )  /\  ( ( g  e.  _V  |->  ( A  u.  U_ x  e.  dom  g ( F `
 ( g `  x ) ) ) ) `  y )  e.  _V ) )
41, 3tfrex 6533 . 2  |-  ( ( ( F  Fn  _V  /\  A  e.  V )  /\  B  e.  W
)  ->  ( rec ( F ,  A ) `
 B )  e. 
_V )
543impa 1220 1  |-  ( ( F  Fn  _V  /\  A  e.  V  /\  B  e.  W )  ->  ( rec ( F ,  A ) `  B )  e.  _V )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 104    /\ w3a 1004    e. wcel 2202   _Vcvv 2802    u. cun 3198   U_ciun 3970    |-> cmpt 4150   dom cdm 4725   Fun wfun 5320    Fn wfn 5321   ` cfv 5326   reccrdg 6534
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-in1 619  ax-in2 620  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-setind 4635
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-fal 1403  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-ne 2403  df-ral 2515  df-rex 2516  df-reu 2517  df-rab 2519  df-v 2804  df-sbc 3032  df-csb 3128  df-dif 3202  df-un 3204  df-in 3206  df-ss 3213  df-nul 3495  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-tr 4188  df-id 4390  df-iord 4463  df-on 4465  df-suc 4468  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-recs 6470  df-irdg 6535
This theorem is referenced by:  rdgexgg  6543  rdgisucinc  6550  omv  6622  oeiv  6623
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