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Theorem fnoprabg 5961
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 2196 . . . . . 6  |-  ( E! z ps  ->  E* z ps )
21imim2i 13 . . . . 5  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  E* z ps )
)
3 moanimv 2214 . . . . 5  |-  ( E* z ( ph  /\  ps )  <->  ( ph  ->  E* z ps ) )
42, 3sylibr 203 . . . 4  |-  ( (
ph  ->  E! z ps )  ->  E* z
( ph  /\  ps )
)
542alimi 1550 . . 3  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  A. x A. y E* z ( ph  /\  ps ) )
6 funoprabg 5959 . . 3  |-  ( A. x A. y E* z
( ph  /\  ps )  ->  Fun  { <. <. x ,  y >. ,  z
>.  |  ( ph  /\ 
ps ) } )
75, 6syl 15 . 2  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  Fun  { <. <. x ,  y >. ,  z
>.  |  ( ph  /\ 
ps ) } )
8 dmoprab 5944 . . 3  |-  dom  { <. <. x ,  y
>. ,  z >.  |  ( ph  /\  ps ) }  =  { <. x ,  y >.  |  E. z ( ph  /\ 
ps ) }
9 nfa1 1768 . . . 4  |-  F/ x A. x A. y (
ph  ->  E! z ps )
10 nfa2 1789 . . . 4  |-  F/ y A. x A. y
( ph  ->  E! z ps )
11 simpl 443 . . . . . . . 8  |-  ( (
ph  /\  ps )  ->  ph )
1211exlimiv 1624 . . . . . . 7  |-  ( E. z ( ph  /\  ps )  ->  ph )
13 euex 2179 . . . . . . . . . 10  |-  ( E! z ps  ->  E. z ps )
1413imim2i 13 . . . . . . . . 9  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  E. z ps )
)
1514ancld 536 . . . . . . . 8  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  ( ph  /\  E. z ps ) ) )
16 19.42v 1858 . . . . . . . 8  |-  ( E. z ( ph  /\  ps )  <->  ( ph  /\  E. z ps ) )
1715, 16syl6ibr 218 . . . . . . 7  |-  ( (
ph  ->  E! z ps )  ->  ( ph  ->  E. z ( ph  /\ 
ps ) ) )
1812, 17impbid2 195 . . . . . 6  |-  ( (
ph  ->  E! z ps )  ->  ( E. z ( ph  /\  ps )  <->  ph ) )
1918sps 1751 . . . . 5  |-  ( A. y ( ph  ->  E! z ps )  -> 
( E. z (
ph  /\  ps )  <->  ph ) )
2019sps 1751 . . . 4  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  ( E. z (
ph  /\  ps )  <->  ph ) )
219, 10, 20opabbid 4097 . . 3  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  { <. x ,  y
>.  |  E. z
( ph  /\  ps ) }  =  { <. x ,  y >.  |  ph } )
228, 21syl5eq 2340 . 2  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  dom  { <. <. x ,  y >. ,  z
>.  |  ( ph  /\ 
ps ) }  =  { <. x ,  y
>.  |  ph } )
23 df-fn 5274 . 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 645 1  |-  ( A. x A. y ( ph  ->  E! z ps )  ->  { <. <. x ,  y
>. ,  z >.  |  ( ph  /\  ps ) }  Fn  { <. x ,  y >.  |  ph } )
Colors of variables: wff set class
Syntax hints:    -> wi 4    <-> wb 176    /\ wa 358   A.wal 1530   E.wex 1531    = wceq 1632   E!weu 2156   E*wmo 2157   {copab 4092   dom cdm 4705   Fun wfun 5265    Fn wfn 5266   {coprab 5875
This theorem is referenced by:  fnoprab  5963  ovg  6002
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1536  ax-5 1547  ax-17 1606  ax-9 1644  ax-8 1661  ax-14 1700  ax-6 1715  ax-7 1720  ax-11 1727  ax-12 1878  ax-ext 2277  ax-sep 4157  ax-nul 4165  ax-pr 4230
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3an 936  df-tru 1310  df-ex 1532  df-nf 1535  df-sb 1639  df-eu 2160  df-mo 2161  df-clab 2283  df-cleq 2289  df-clel 2292  df-nfc 2421  df-ne 2461  df-ral 2561  df-rex 2562  df-rab 2565  df-v 2803  df-dif 3168  df-un 3170  df-in 3172  df-ss 3179  df-nul 3469  df-if 3579  df-sn 3659  df-pr 3660  df-op 3662  df-br 4040  df-opab 4094  df-id 4325  df-xp 4711  df-rel 4712  df-cnv 4713  df-co 4714  df-dm 4715  df-fun 5273  df-fn 5274  df-oprab 5878
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