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Theorem fnoprabg 6416
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 2348 . . . . . 6  |-  ( E! z ps  ->  E* z ps )
21imim2i 16 . . . . 5  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  E* z ps )
)
3 moanimv 2380 . . . . 5  |-  ( E* z ( ph  /\  ps )  <->  ( ph  ->  E* z ps ) )
42, 3sylibr 217 . . . 4  |-  ( (
ph  ->  E! z ps )  ->  E* z
( ph  /\  ps )
)
542alimi 1693 . . 3  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  A. x A. y E* z ( ph  /\  ps ) )
6 funoprabg 6414 . . 3  |-  ( A. x A. y E* z
( ph  /\  ps )  ->  Fun  { <. <. x ,  y >. ,  z
>.  |  ( ph  /\ 
ps ) } )
75, 6syl 17 . 2  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  Fun  { <. <. x ,  y >. ,  z
>.  |  ( ph  /\ 
ps ) } )
8 dmoprab 6396 . . 3  |-  dom  { <. <. x ,  y
>. ,  z >.  |  ( ph  /\  ps ) }  =  { <. x ,  y >.  |  E. z ( ph  /\ 
ps ) }
9 nfa1 1999 . . . 4  |-  F/ x A. x A. y (
ph  ->  E! z ps )
10 nfa2 2055 . . . 4  |-  F/ y A. x A. y
( ph  ->  E! z ps )
11 simpl 464 . . . . . . . 8  |-  ( (
ph  /\  ps )  ->  ph )
1211exlimiv 1784 . . . . . . 7  |-  ( E. z ( ph  /\  ps )  ->  ph )
13 euex 2343 . . . . . . . . . 10  |-  ( E! z ps  ->  E. z ps )
1413imim2i 16 . . . . . . . . 9  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  E. z ps )
)
1514ancld 562 . . . . . . . 8  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  ( ph  /\  E. z ps ) ) )
16 19.42v 1842 . . . . . . . 8  |-  ( E. z ( ph  /\  ps )  <->  ( ph  /\  E. z ps ) )
1715, 16syl6ibr 235 . . . . . . 7  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  E. z ( ph  /\ 
ps ) ) )
1812, 17impbid2 209 . . . . . 6  |-  ( (
ph  ->  E! z ps )  ->  ( E. z ( ph  /\  ps )  <->  ph ) )
1918sps 1963 . . . . 5  |-  ( A. y ( ph  ->  E! z ps )  -> 
( E. z (
ph  /\  ps )  <->  ph ) )
2019sps 1963 . . . 4  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  ( E. z (
ph  /\  ps )  <->  ph ) )
219, 10, 20opabbid 4458 . . 3  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  { <. x ,  y
>.  |  E. z
( ph  /\  ps ) }  =  { <. x ,  y >.  |  ph } )
228, 21syl5eq 2517 . 2  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  dom  { <. <. x ,  y >. ,  z
>.  |  ( ph  /\ 
ps ) }  =  { <. x ,  y
>.  |  ph } )
23 df-fn 5592 . 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 677 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 189    /\ wa 376   A.wal 1450    = wceq 1452   E.wex 1671   E!weu 2319   E*wmo 2320   {copab 4453   dom cdm 4839   Fun wfun 5583    Fn wfn 5584   {coprab 6309
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1677  ax-4 1690  ax-5 1766  ax-6 1813  ax-7 1859  ax-9 1913  ax-10 1932  ax-11 1937  ax-12 1950  ax-13 2104  ax-ext 2451  ax-sep 4518  ax-nul 4527  ax-pr 4639
This theorem depends on definitions:  df-bi 190  df-or 377  df-an 378  df-3an 1009  df-tru 1455  df-ex 1672  df-nf 1676  df-sb 1806  df-eu 2323  df-mo 2324  df-clab 2458  df-cleq 2464  df-clel 2467  df-nfc 2601  df-ne 2643  df-ral 2761  df-rex 2762  df-rab 2765  df-v 3033  df-dif 3393  df-un 3395  df-in 3397  df-ss 3404  df-nul 3723  df-if 3873  df-sn 3960  df-pr 3962  df-op 3966  df-br 4396  df-opab 4455  df-id 4754  df-xp 4845  df-rel 4846  df-cnv 4847  df-co 4848  df-dm 4849  df-fun 5591  df-fn 5592  df-oprab 6312
This theorem is referenced by:  fnoprab  6418  ovg  6454
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