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Theorem ssoprab2 5904
Description: Equivalence of ordered pair abstraction subclass and implication. Compare ssopab2 4290. (Contributed by FL, 6-Nov-2013.) (Proof shortened by Mario Carneiro, 11-Dec-2016.)
Assertion
Ref Expression
ssoprab2  |-  ( A. x A. y A. z
( ph  ->  ps )  ->  { <. <. x ,  y
>. ,  z >.  | 
ph }  C_  { <. <.
x ,  y >. ,  z >.  |  ps } )

Proof of Theorem ssoprab2
Dummy variable  w is distinct from all other variables.
StepHypRef Expression
1 id 19 . . . . . . . . . 10  |-  ( (
ph  ->  ps )  -> 
( ph  ->  ps )
)
21anim2d 548 . . . . . . . . 9  |-  ( (
ph  ->  ps )  -> 
( ( w  = 
<. <. x ,  y
>. ,  z >.  /\ 
ph )  ->  (
w  =  <. <. x ,  y >. ,  z
>.  /\  ps ) ) )
32alimi 1546 . . . . . . . 8  |-  ( A. z ( ph  ->  ps )  ->  A. z
( ( w  = 
<. <. x ,  y
>. ,  z >.  /\ 
ph )  ->  (
w  =  <. <. x ,  y >. ,  z
>.  /\  ps ) ) )
4 exim 1562 . . . . . . . 8  |-  ( A. z ( ( w  =  <. <. x ,  y
>. ,  z >.  /\ 
ph )  ->  (
w  =  <. <. x ,  y >. ,  z
>.  /\  ps ) )  ->  ( E. z
( w  =  <. <.
x ,  y >. ,  z >.  /\  ph )  ->  E. z ( w  =  <. <. x ,  y
>. ,  z >.  /\ 
ps ) ) )
53, 4syl 15 . . . . . . 7  |-  ( A. z ( ph  ->  ps )  ->  ( E. z ( w  = 
<. <. x ,  y
>. ,  z >.  /\ 
ph )  ->  E. z
( w  =  <. <.
x ,  y >. ,  z >.  /\  ps ) ) )
65alimi 1546 . . . . . 6  |-  ( A. y A. z ( ph  ->  ps )  ->  A. y
( E. z ( w  =  <. <. x ,  y >. ,  z
>.  /\  ph )  ->  E. z ( w  = 
<. <. x ,  y
>. ,  z >.  /\ 
ps ) ) )
7 exim 1562 . . . . . 6  |-  ( A. y ( E. z
( w  =  <. <.
x ,  y >. ,  z >.  /\  ph )  ->  E. z ( w  =  <. <. x ,  y
>. ,  z >.  /\ 
ps ) )  -> 
( E. y E. z ( w  = 
<. <. x ,  y
>. ,  z >.  /\ 
ph )  ->  E. y E. z ( w  = 
<. <. x ,  y
>. ,  z >.  /\ 
ps ) ) )
86, 7syl 15 . . . . 5  |-  ( A. y A. z ( ph  ->  ps )  ->  ( E. y E. z ( w  =  <. <. x ,  y >. ,  z
>.  /\  ph )  ->  E. y E. z ( w  =  <. <. x ,  y >. ,  z
>.  /\  ps ) ) )
98alimi 1546 . . . 4  |-  ( A. x A. y A. z
( ph  ->  ps )  ->  A. x ( E. y E. z ( w  =  <. <. x ,  y >. ,  z
>.  /\  ph )  ->  E. y E. z ( w  =  <. <. x ,  y >. ,  z
>.  /\  ps ) ) )
10 exim 1562 . . . 4  |-  ( A. x ( E. y E. z ( w  = 
<. <. x ,  y
>. ,  z >.  /\ 
ph )  ->  E. y E. z ( w  = 
<. <. x ,  y
>. ,  z >.  /\ 
ps ) )  -> 
( E. x E. y E. z ( w  =  <. <. x ,  y
>. ,  z >.  /\ 
ph )  ->  E. x E. y E. z ( w  =  <. <. x ,  y >. ,  z
>.  /\  ps ) ) )
119, 10syl 15 . . 3  |-  ( A. x A. y A. z
( ph  ->  ps )  ->  ( E. x E. y E. z ( w  =  <. <. x ,  y
>. ,  z >.  /\ 
ph )  ->  E. x E. y E. z ( w  =  <. <. x ,  y >. ,  z
>.  /\  ps ) ) )
1211ss2abdv 3246 . 2  |-  ( A. x A. y A. z
( ph  ->  ps )  ->  { w  |  E. x E. y E. z
( w  =  <. <.
x ,  y >. ,  z >.  /\  ph ) }  C_  { w  |  E. x E. y E. z ( w  = 
<. <. x ,  y
>. ,  z >.  /\ 
ps ) } )
13 df-oprab 5862 . 2  |-  { <. <.
x ,  y >. ,  z >.  |  ph }  =  { w  |  E. x E. y E. z ( w  = 
<. <. x ,  y
>. ,  z >.  /\ 
ph ) }
14 df-oprab 5862 . 2  |-  { <. <.
x ,  y >. ,  z >.  |  ps }  =  { w  |  E. x E. y E. z ( w  = 
<. <. x ,  y
>. ,  z >.  /\ 
ps ) }
1512, 13, 143sstr4g 3219 1  |-  ( A. x A. y A. z
( ph  ->  ps )  ->  { <. <. x ,  y
>. ,  z >.  | 
ph }  C_  { <. <.
x ,  y >. ,  z >.  |  ps } )
Colors of variables: wff set class
Syntax hints:    -> wi 4    /\ wa 358   A.wal 1527   E.wex 1528    = wceq 1623   {cab 2269    C_ wss 3152   <.cop 3643   {coprab 5859
This theorem is referenced by:  ssoprab2b  5905
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-3 7  ax-mp 8  ax-gen 1533  ax-5 1544  ax-17 1603  ax-9 1635  ax-8 1643  ax-6 1703  ax-7 1708  ax-11 1715  ax-12 1866  ax-ext 2264
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-tru 1310  df-ex 1529  df-nf 1532  df-sb 1630  df-clab 2270  df-cleq 2276  df-clel 2279  df-nfc 2408  df-in 3159  df-ss 3166  df-oprab 5862
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