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Theorem fnoprabg 6186
Description: Functionality and domain of an operation class abstraction. (Contributed by NM, 28-Aug-2007.)
Assertion
Ref Expression
fnoprabg  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  { <. <. x ,  y
>. ,  z >.  |  ( ph  /\  ps ) }  Fn  { <. x ,  y >.  |  ph } )
Distinct variable groups:    x, y,
z    ph, z
Allowed substitution hints:    ph( x, y)    ps( x, y, z)

Proof of Theorem fnoprabg
StepHypRef Expression
1 eumo 2284 . . . . . 6  |-  ( E! z ps  ->  E* z ps )
21imim2i 14 . . . . 5  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  E* z ps )
)
3 moanimv 2332 . . . . 5  |-  ( E* z ( ph  /\  ps )  <->  ( ph  ->  E* z ps ) )
42, 3sylibr 212 . . . 4  |-  ( (
ph  ->  E! z ps )  ->  E* z
( ph  /\  ps )
)
542alimi 1605 . . 3  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  A. x A. y E* z ( ph  /\  ps ) )
6 funoprabg 6184 . . 3  |-  ( A. x A. y E* z
( ph  /\  ps )  ->  Fun  { <. <. x ,  y >. ,  z
>.  |  ( ph  /\ 
ps ) } )
75, 6syl 16 . 2  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  Fun  { <. <. x ,  y >. ,  z
>.  |  ( ph  /\ 
ps ) } )
8 dmoprab 6166 . . 3  |-  dom  { <. <. x ,  y
>. ,  z >.  |  ( ph  /\  ps ) }  =  { <. x ,  y >.  |  E. z ( ph  /\ 
ps ) }
9 nfa1 1830 . . . 4  |-  F/ x A. x A. y (
ph  ->  E! z ps )
10 nfa2 1878 . . . 4  |-  F/ y A. x A. y
( ph  ->  E! z ps )
11 simpl 457 . . . . . . . 8  |-  ( (
ph  /\  ps )  ->  ph )
1211exlimiv 1688 . . . . . . 7  |-  ( E. z ( ph  /\  ps )  ->  ph )
13 euex 2279 . . . . . . . . . 10  |-  ( E! z ps  ->  E. z ps )
1413imim2i 14 . . . . . . . . 9  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  E. z ps )
)
1514ancld 553 . . . . . . . 8  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  ( ph  /\  E. z ps ) ) )
16 19.42v 1923 . . . . . . . 8  |-  ( E. z ( ph  /\  ps )  <->  ( ph  /\  E. z ps ) )
1715, 16syl6ibr 227 . . . . . . 7  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  E. z ( ph  /\ 
ps ) ) )
1812, 17impbid2 204 . . . . . 6  |-  ( (
ph  ->  E! z ps )  ->  ( E. z ( ph  /\  ps )  <->  ph ) )
1918sps 1800 . . . . 5  |-  ( A. y ( ph  ->  E! z ps )  -> 
( E. z (
ph  /\  ps )  <->  ph ) )
2019sps 1800 . . . 4  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  ( E. z (
ph  /\  ps )  <->  ph ) )
219, 10, 20opabbid 4349 . . 3  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  { <. x ,  y
>.  |  E. z
( ph  /\  ps ) }  =  { <. x ,  y >.  |  ph } )
228, 21syl5eq 2482 . 2  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  dom  { <. <. x ,  y >. ,  z
>.  |  ( ph  /\ 
ps ) }  =  { <. x ,  y
>.  |  ph } )
23 df-fn 5416 . 2  |-  ( {
<. <. x ,  y
>. ,  z >.  |  ( ph  /\  ps ) }  Fn  { <. x ,  y >.  |  ph } 
<->  ( Fun  { <. <.
x ,  y >. ,  z >.  |  (
ph  /\  ps ) }  /\  dom  { <. <.
x ,  y >. ,  z >.  |  (
ph  /\  ps ) }  =  { <. x ,  y >.  |  ph } ) )
247, 22, 23sylanbrc 664 1  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  { <. <. x ,  y
>. ,  z >.  |  ( ph  /\  ps ) }  Fn  { <. x ,  y >.  |  ph } )
Colors of variables: wff setvar class
Syntax hints:    -> wi 4    <-> wb 184    /\ wa 369   A.wal 1367    = wceq 1369   E.wex 1586   E!weu 2252   E*wmo 2253   {copab 4344   dom cdm 4835   Fun wfun 5407    Fn wfn 5408   {coprab 6087
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1591  ax-4 1602  ax-5 1670  ax-6 1708  ax-7 1728  ax-9 1760  ax-10 1775  ax-11 1780  ax-12 1792  ax-13 1943  ax-ext 2419  ax-sep 4408  ax-nul 4416  ax-pr 4526
This theorem depends on definitions:  df-bi 185  df-or 370  df-an 371  df-3an 967  df-tru 1372  df-ex 1587  df-nf 1590  df-sb 1701  df-eu 2256  df-mo 2257  df-clab 2425  df-cleq 2431  df-clel 2434  df-nfc 2563  df-ne 2603  df-ral 2715  df-rex 2716  df-rab 2719  df-v 2969  df-dif 3326  df-un 3328  df-in 3330  df-ss 3337  df-nul 3633  df-if 3787  df-sn 3873  df-pr 3875  df-op 3879  df-br 4288  df-opab 4346  df-id 4631  df-xp 4841  df-rel 4842  df-cnv 4843  df-co 4844  df-dm 4845  df-fun 5415  df-fn 5416  df-oprab 6090
This theorem is referenced by:  fnoprab  6188  ovg  6224
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