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Theorem tfrlemiex 6272
Description: Lemma for tfrlemi1 6273. (Contributed by Jim Kingdon, 18-Mar-2019.) (Proof shortened by Mario Carneiro, 24-May-2019.)
Hypotheses
Ref Expression
tfrlemisucfn.1  |-  A  =  { f  |  E. x  e.  On  (
f  Fn  x  /\  A. y  e.  x  ( f `  y )  =  ( F `  ( f  |`  y
) ) ) }
tfrlemisucfn.2  |-  ( ph  ->  A. x ( Fun 
F  /\  ( F `  x )  e.  _V ) )
tfrlemi1.3  |-  B  =  { h  |  E. z  e.  x  E. g ( g  Fn  z  /\  g  e.  A  /\  h  =  ( g  u.  { <. z ,  ( F `
 g ) >. } ) ) }
tfrlemi1.4  |-  ( ph  ->  x  e.  On )
tfrlemi1.5  |-  ( ph  ->  A. z  e.  x  E. g ( g  Fn  z  /\  A. w  e.  z  ( g `  w )  =  ( F `  ( g  |`  w ) ) ) )
Assertion
Ref Expression
tfrlemiex  |-  ( ph  ->  E. f ( f  Fn  x  /\  A. u  e.  x  (
f `  u )  =  ( F `  ( f  |`  u
) ) ) )
Distinct variable groups:    f, g, h, u, w, x, y, z, A    f, F, g, h, u, w, x, y, z    ph, w, y    u, B, w, f, g, h, z    ph, g, h, z
Allowed substitution hints:    ph( x, u, f)    B( x, y)

Proof of Theorem tfrlemiex
StepHypRef Expression
1 tfrlemisucfn.1 . . . 4  |-  A  =  { f  |  E. x  e.  On  (
f  Fn  x  /\  A. y  e.  x  ( f `  y )  =  ( F `  ( f  |`  y
) ) ) }
2 tfrlemisucfn.2 . . . 4  |-  ( ph  ->  A. x ( Fun 
F  /\  ( F `  x )  e.  _V ) )
3 tfrlemi1.3 . . . 4  |-  B  =  { h  |  E. z  e.  x  E. g ( g  Fn  z  /\  g  e.  A  /\  h  =  ( g  u.  { <. z ,  ( F `
 g ) >. } ) ) }
4 tfrlemi1.4 . . . 4  |-  ( ph  ->  x  e.  On )
5 tfrlemi1.5 . . . 4  |-  ( ph  ->  A. z  e.  x  E. g ( g  Fn  z  /\  A. w  e.  z  ( g `  w )  =  ( F `  ( g  |`  w ) ) ) )
61, 2, 3, 4, 5tfrlemibex 6270 . . 3  |-  ( ph  ->  B  e.  _V )
7 uniexg 4398 . . 3  |-  ( B  e.  _V  ->  U. B  e.  _V )
86, 7syl 14 . 2  |-  ( ph  ->  U. B  e.  _V )
91, 2, 3, 4, 5tfrlemibfn 6269 . . 3  |-  ( ph  ->  U. B  Fn  x
)
101, 2, 3, 4, 5tfrlemiubacc 6271 . . 3  |-  ( ph  ->  A. u  e.  x  ( U. B `  u
)  =  ( F `
 ( U. B  |`  u ) ) )
119, 10jca 304 . 2  |-  ( ph  ->  ( U. B  Fn  x  /\  A. u  e.  x  ( U. B `  u )  =  ( F `  ( U. B  |`  u ) ) ) )
12 fneq1 5255 . . . 4  |-  ( f  =  U. B  -> 
( f  Fn  x  <->  U. B  Fn  x ) )
13 fveq1 5464 . . . . . 6  |-  ( f  =  U. B  -> 
( f `  u
)  =  ( U. B `  u )
)
14 reseq1 4857 . . . . . . 7  |-  ( f  =  U. B  -> 
( f  |`  u
)  =  ( U. B  |`  u ) )
1514fveq2d 5469 . . . . . 6  |-  ( f  =  U. B  -> 
( F `  (
f  |`  u ) )  =  ( F `  ( U. B  |`  u
) ) )
1613, 15eqeq12d 2172 . . . . 5  |-  ( f  =  U. B  -> 
( ( f `  u )  =  ( F `  ( f  |`  u ) )  <->  ( U. B `  u )  =  ( F `  ( U. B  |`  u
) ) ) )
1716ralbidv 2457 . . . 4  |-  ( f  =  U. B  -> 
( A. u  e.  x  ( f `  u )  =  ( F `  ( f  |`  u ) )  <->  A. u  e.  x  ( U. B `  u )  =  ( F `  ( U. B  |`  u
) ) ) )
1812, 17anbi12d 465 . . 3  |-  ( f  =  U. B  -> 
( ( f  Fn  x  /\  A. u  e.  x  ( f `  u )  =  ( F `  ( f  |`  u ) ) )  <-> 
( U. B  Fn  x  /\  A. u  e.  x  ( U. B `  u )  =  ( F `  ( U. B  |`  u ) ) ) ) )
1918spcegv 2800 . 2  |-  ( U. B  e.  _V  ->  ( ( U. B  Fn  x  /\  A. u  e.  x  ( U. B `  u )  =  ( F `  ( U. B  |`  u ) ) )  ->  E. f
( f  Fn  x  /\  A. u  e.  x  ( f `  u
)  =  ( F `
 ( f  |`  u ) ) ) ) )
208, 11, 19sylc 62 1  |-  ( ph  ->  E. f ( f  Fn  x  /\  A. u  e.  x  (
f `  u )  =  ( F `  ( f  |`  u
) ) ) )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 103    /\ w3a 963   A.wal 1333    = wceq 1335   E.wex 1472    e. wcel 2128   {cab 2143   A.wral 2435   E.wrex 2436   _Vcvv 2712    u. cun 3100   {csn 3560   <.cop 3563   U.cuni 3772   Oncon0 4322    |` cres 4585   Fun wfun 5161    Fn wfn 5162   ` cfv 5167
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-in1 604  ax-in2 605  ax-io 699  ax-5 1427  ax-7 1428  ax-gen 1429  ax-ie1 1473  ax-ie2 1474  ax-8 1484  ax-10 1485  ax-11 1486  ax-i12 1487  ax-bndl 1489  ax-4 1490  ax-17 1506  ax-i9 1510  ax-ial 1514  ax-i5r 1515  ax-13 2130  ax-14 2131  ax-ext 2139  ax-coll 4079  ax-sep 4082  ax-pow 4134  ax-pr 4168  ax-un 4392  ax-setind 4494
This theorem depends on definitions:  df-bi 116  df-3an 965  df-tru 1338  df-fal 1341  df-nf 1441  df-sb 1743  df-eu 2009  df-mo 2010  df-clab 2144  df-cleq 2150  df-clel 2153  df-nfc 2288  df-ne 2328  df-ral 2440  df-rex 2441  df-reu 2442  df-rab 2444  df-v 2714  df-sbc 2938  df-csb 3032  df-dif 3104  df-un 3106  df-in 3108  df-ss 3115  df-nul 3395  df-pw 3545  df-sn 3566  df-pr 3567  df-op 3569  df-uni 3773  df-iun 3851  df-br 3966  df-opab 4026  df-mpt 4027  df-tr 4063  df-id 4252  df-iord 4325  df-on 4327  df-suc 4330  df-xp 4589  df-rel 4590  df-cnv 4591  df-co 4592  df-dm 4593  df-rn 4594  df-res 4595  df-ima 4596  df-iota 5132  df-fun 5169  df-fn 5170  df-f 5171  df-f1 5172  df-fo 5173  df-f1o 5174  df-fv 5175  df-recs 6246
This theorem is referenced by:  tfrlemi1  6273
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