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Theorem dfoprab2 5580
Description: Class abstraction for operations in terms of class abstraction of ordered pairs. (Contributed by NM, 12-Mar-1995.)
Assertion
Ref Expression
dfoprab2  |-  { <. <.
x ,  y >. ,  z >.  |  ph }  =  { <. w ,  z >.  |  E. x E. y ( w  =  <. x ,  y
>.  /\  ph ) }
Distinct variable groups:    x, z, w   
y, z, w    ph, w
Allowed substitution hints:    ph( x, y, z)

Proof of Theorem dfoprab2
Dummy variable  v is distinct from all other variables.
StepHypRef Expression
1 excom 1570 . . . 4  |-  ( E. z E. w E. x E. y ( v  =  <. w ,  z
>.  /\  ( w  = 
<. x ,  y >.  /\  ph ) )  <->  E. w E. z E. x E. y ( v  = 
<. w ,  z >.  /\  ( w  =  <. x ,  y >.  /\  ph ) ) )
2 exrot4 1597 . . . . 5  |-  ( E. z E. w E. x E. y ( v  =  <. w ,  z
>.  /\  ( w  = 
<. x ,  y >.  /\  ph ) )  <->  E. x E. y E. z E. w ( v  = 
<. w ,  z >.  /\  ( w  =  <. x ,  y >.  /\  ph ) ) )
3 opeq1 3577 . . . . . . . . . . . 12  |-  ( w  =  <. x ,  y
>.  ->  <. w ,  z
>.  =  <. <. x ,  y >. ,  z
>. )
43eqeq2d 2067 . . . . . . . . . . 11  |-  ( w  =  <. x ,  y
>.  ->  ( v  = 
<. w ,  z >.  <->  v  =  <. <. x ,  y
>. ,  z >. ) )
54pm5.32ri 436 . . . . . . . . . 10  |-  ( ( v  =  <. w ,  z >.  /\  w  =  <. x ,  y
>. )  <->  ( v  = 
<. <. x ,  y
>. ,  z >.  /\  w  =  <. x ,  y >. )
)
65anbi1i 439 . . . . . . . . 9  |-  ( ( ( v  =  <. w ,  z >.  /\  w  =  <. x ,  y
>. )  /\  ph )  <->  ( ( v  =  <. <.
x ,  y >. ,  z >.  /\  w  =  <. x ,  y
>. )  /\  ph )
)
7 anass 387 . . . . . . . . 9  |-  ( ( ( v  =  <. w ,  z >.  /\  w  =  <. x ,  y
>. )  /\  ph )  <->  ( v  =  <. w ,  z >.  /\  (
w  =  <. x ,  y >.  /\  ph ) ) )
8 an32 504 . . . . . . . . 9  |-  ( ( ( v  =  <. <.
x ,  y >. ,  z >.  /\  w  =  <. x ,  y
>. )  /\  ph )  <->  ( ( v  =  <. <.
x ,  y >. ,  z >.  /\  ph )  /\  w  =  <. x ,  y >. )
)
96, 7, 83bitr3i 203 . . . . . . . 8  |-  ( ( v  =  <. w ,  z >.  /\  (
w  =  <. x ,  y >.  /\  ph ) )  <->  ( (
v  =  <. <. x ,  y >. ,  z
>.  /\  ph )  /\  w  =  <. x ,  y >. ) )
109exbii 1512 . . . . . . 7  |-  ( E. w ( v  = 
<. w ,  z >.  /\  ( w  =  <. x ,  y >.  /\  ph ) )  <->  E. w
( ( v  = 
<. <. x ,  y
>. ,  z >.  /\ 
ph )  /\  w  =  <. x ,  y
>. ) )
11 vex 2577 . . . . . . . . . 10  |-  x  e. 
_V
12 vex 2577 . . . . . . . . . 10  |-  y  e. 
_V
1311, 12opex 3994 . . . . . . . . 9  |-  <. x ,  y >.  e.  _V
1413isseti 2580 . . . . . . . 8  |-  E. w  w  =  <. x ,  y >.
15 19.42v 1802 . . . . . . . 8  |-  ( E. w ( ( v  =  <. <. x ,  y
>. ,  z >.  /\ 
ph )  /\  w  =  <. x ,  y
>. )  <->  ( ( v  =  <. <. x ,  y
>. ,  z >.  /\ 
ph )  /\  E. w  w  =  <. x ,  y >. )
)
1614, 15mpbiran2 859 . . . . . . 7  |-  ( E. w ( ( v  =  <. <. x ,  y
>. ,  z >.  /\ 
ph )  /\  w  =  <. x ,  y
>. )  <->  ( v  = 
<. <. x ,  y
>. ,  z >.  /\ 
ph ) )
1710, 16bitri 177 . . . . . 6  |-  ( E. w ( v  = 
<. w ,  z >.  /\  ( w  =  <. x ,  y >.  /\  ph ) )  <->  ( v  =  <. <. x ,  y
>. ,  z >.  /\ 
ph ) )
18173exbii 1514 . . . . 5  |-  ( E. x E. y E. z E. w ( v  =  <. w ,  z >.  /\  (
w  =  <. x ,  y >.  /\  ph ) )  <->  E. x E. y E. z ( v  =  <. <. x ,  y >. ,  z
>.  /\  ph ) )
192, 18bitri 177 . . . 4  |-  ( E. z E. w E. x E. y ( v  =  <. w ,  z
>.  /\  ( w  = 
<. x ,  y >.  /\  ph ) )  <->  E. x E. y E. z ( v  =  <. <. x ,  y >. ,  z
>.  /\  ph ) )
20 19.42vv 1804 . . . . 5  |-  ( E. x E. y ( v  =  <. w ,  z >.  /\  (
w  =  <. x ,  y >.  /\  ph ) )  <->  ( v  =  <. w ,  z
>.  /\  E. x E. y ( w  = 
<. x ,  y >.  /\  ph ) ) )
21202exbii 1513 . . . 4  |-  ( E. w E. z E. x E. y ( v  =  <. w ,  z >.  /\  (
w  =  <. x ,  y >.  /\  ph ) )  <->  E. w E. z ( v  = 
<. w ,  z >.  /\  E. x E. y
( w  =  <. x ,  y >.  /\  ph ) ) )
221, 19, 213bitr3i 203 . . 3  |-  ( E. x E. y E. z ( v  = 
<. <. x ,  y
>. ,  z >.  /\ 
ph )  <->  E. w E. z ( v  = 
<. w ,  z >.  /\  E. x E. y
( w  =  <. x ,  y >.  /\  ph ) ) )
2322abbii 2169 . 2  |-  { v  |  E. x E. y E. z ( v  =  <. <. x ,  y
>. ,  z >.  /\ 
ph ) }  =  { v  |  E. w E. z ( v  =  <. w ,  z
>.  /\  E. x E. y ( w  = 
<. x ,  y >.  /\  ph ) ) }
24 df-oprab 5544 . 2  |-  { <. <.
x ,  y >. ,  z >.  |  ph }  =  { v  |  E. x E. y E. z ( v  = 
<. <. x ,  y
>. ,  z >.  /\ 
ph ) }
25 df-opab 3847 . 2  |-  { <. w ,  z >.  |  E. x E. y ( w  =  <. x ,  y
>.  /\  ph ) }  =  { v  |  E. w E. z
( v  =  <. w ,  z >.  /\  E. x E. y ( w  =  <. x ,  y
>.  /\  ph ) ) }
2623, 24, 253eqtr4i 2086 1  |-  { <. <.
x ,  y >. ,  z >.  |  ph }  =  { <. w ,  z >.  |  E. x E. y ( w  =  <. x ,  y
>.  /\  ph ) }
Colors of variables: wff set class
Syntax hints:    /\ wa 101    = wceq 1259   E.wex 1397   {cab 2042   <.cop 3406   {copab 3845   {coprab 5541
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 103  ax-ia2 104  ax-ia3 105  ax-io 640  ax-5 1352  ax-7 1353  ax-gen 1354  ax-ie1 1398  ax-ie2 1399  ax-8 1411  ax-10 1412  ax-11 1413  ax-i12 1414  ax-bndl 1415  ax-4 1416  ax-14 1421  ax-17 1435  ax-i9 1439  ax-ial 1443  ax-i5r 1444  ax-ext 2038  ax-sep 3903  ax-pow 3955  ax-pr 3972
This theorem depends on definitions:  df-bi 114  df-3an 898  df-tru 1262  df-nf 1366  df-sb 1662  df-clab 2043  df-cleq 2049  df-clel 2052  df-nfc 2183  df-v 2576  df-un 2950  df-in 2952  df-ss 2959  df-pw 3389  df-sn 3409  df-pr 3410  df-op 3412  df-opab 3847  df-oprab 5544
This theorem is referenced by:  reloprab  5581  cbvoprab1  5604  cbvoprab12  5606  cbvoprab3  5608  dmoprab  5613  rnoprab  5615  ssoprab2i  5621  mpt2mptx  5623  resoprab  5625  funoprabg  5628  ov6g  5666  dfoprab3s  5844  xpcomco  6331
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