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Theorem acexmidlemv 6048
Description: Lemma for acexmid 6049.

This is acexmid 6049 with additional disjoint variable conditions, most notably between  ph and  x.

(Contributed by Jim Kingdon, 6-Aug-2019.)

Hypothesis
Ref Expression
acexmidlemv.choice  |-  E. y A. z  e.  x  A. w  e.  z  E! v  e.  z  E. u  e.  y 
( z  e.  u  /\  v  e.  u
)
Assertion
Ref Expression
acexmidlemv  |-  ( ph  \/  -.  ph )
Distinct variable group:    ph, x, y, z, w, v, u

Proof of Theorem acexmidlemv
Dummy variables  s  t are mutually distinct and distinct from all other variables.
StepHypRef Expression
1 onsucelsucexmidlem 4651 . . . 4  |-  { s  e.  { (/) ,  { (/)
} }  |  ( s  =  (/)  \/  ph ) }  e.  On
2 pp0ex 4302 . . . . 5  |-  { (/) ,  { (/) } }  e.  _V
32rabex 4256 . . . 4  |-  { s  e.  { (/) ,  { (/)
} }  |  ( s  =  { (/) }  \/  ph ) }  e.  _V
4 prexg 4325 . . . 4  |-  ( ( { s  e.  { (/)
,  { (/) } }  |  ( s  =  (/)  \/  ph ) }  e.  On  /\  {
s  e.  { (/) ,  { (/) } }  | 
( s  =  { (/)
}  \/  ph ) }  e.  _V )  ->  { { s  e. 
{ (/) ,  { (/) } }  |  ( s  =  (/)  \/  ph ) } ,  { s  e.  { (/) ,  { (/) } }  |  ( s  =  { (/) }  \/  ph ) } }  e.  _V )
51, 3, 4mp2an 426 . . 3  |-  { {
s  e.  { (/) ,  { (/) } }  | 
( s  =  (/)  \/ 
ph ) } ,  { s  e.  { (/)
,  { (/) } }  |  ( s  =  { (/) }  \/  ph ) } }  e.  _V
6 raleq 2741 . . . 4  |-  ( x  =  { { s  e.  { (/) ,  { (/)
} }  |  ( s  =  (/)  \/  ph ) } ,  { s  e.  { (/) ,  { (/)
} }  |  ( s  =  { (/) }  \/  ph ) } }  ->  ( A. z  e.  x  A. w  e.  z  E! v  e.  z  E. u  e.  y  (
z  e.  u  /\  v  e.  u )  <->  A. z  e.  { {
s  e.  { (/) ,  { (/) } }  | 
( s  =  (/)  \/ 
ph ) } ,  { s  e.  { (/)
,  { (/) } }  |  ( s  =  { (/) }  \/  ph ) } } A. w  e.  z  E! v  e.  z  E. u  e.  y  ( z  e.  u  /\  v  e.  u ) ) )
76exbidv 1874 . . 3  |-  ( x  =  { { s  e.  { (/) ,  { (/)
} }  |  ( s  =  (/)  \/  ph ) } ,  { s  e.  { (/) ,  { (/)
} }  |  ( s  =  { (/) }  \/  ph ) } }  ->  ( E. y A. z  e.  x  A. w  e.  z  E! v  e.  z  E. u  e.  y 
( z  e.  u  /\  v  e.  u
)  <->  E. y A. z  e.  { { s  e. 
{ (/) ,  { (/) } }  |  ( s  =  (/)  \/  ph ) } ,  { s  e.  { (/) ,  { (/) } }  |  ( s  =  { (/) }  \/  ph ) } } A. w  e.  z  E! v  e.  z  E. u  e.  y  (
z  e.  u  /\  v  e.  u )
) )
8 acexmidlemv.choice . . 3  |-  E. y A. z  e.  x  A. w  e.  z  E! v  e.  z  E. u  e.  y 
( z  e.  u  /\  v  e.  u
)
95, 7, 8vtocl 2869 . 2  |-  E. y A. z  e.  { {
s  e.  { (/) ,  { (/) } }  | 
( s  =  (/)  \/ 
ph ) } ,  { s  e.  { (/)
,  { (/) } }  |  ( s  =  { (/) }  \/  ph ) } } A. w  e.  z  E! v  e.  z  E. u  e.  y  ( z  e.  u  /\  v  e.  u )
10 eqeq1 2239 . . . . . 6  |-  ( s  =  t  ->  (
s  =  (/)  <->  t  =  (/) ) )
1110orbi1d 799 . . . . 5  |-  ( s  =  t  ->  (
( s  =  (/)  \/ 
ph )  <->  ( t  =  (/)  \/  ph )
) )
1211cbvrabv 2812 . . . 4  |-  { s  e.  { (/) ,  { (/)
} }  |  ( s  =  (/)  \/  ph ) }  =  {
t  e.  { (/) ,  { (/) } }  | 
( t  =  (/)  \/ 
ph ) }
13 eqeq1 2239 . . . . . 6  |-  ( s  =  t  ->  (
s  =  { (/) }  <-> 
t  =  { (/) } ) )
1413orbi1d 799 . . . . 5  |-  ( s  =  t  ->  (
( s  =  { (/)
}  \/  ph )  <->  ( t  =  { (/) }  \/  ph ) ) )
1514cbvrabv 2812 . . . 4  |-  { s  e.  { (/) ,  { (/)
} }  |  ( s  =  { (/) }  \/  ph ) }  =  { t  e. 
{ (/) ,  { (/) } }  |  ( t  =  { (/) }  \/  ph ) }
16 eqid 2232 . . . 4  |-  { {
s  e.  { (/) ,  { (/) } }  | 
( s  =  (/)  \/ 
ph ) } ,  { s  e.  { (/)
,  { (/) } }  |  ( s  =  { (/) }  \/  ph ) } }  =  { { s  e.  { (/)
,  { (/) } }  |  ( s  =  (/)  \/  ph ) } ,  { s  e. 
{ (/) ,  { (/) } }  |  ( s  =  { (/) }  \/  ph ) } }
1712, 15, 16acexmidlem2 6047 . . 3  |-  ( A. z  e.  { { s  e.  { (/) ,  { (/)
} }  |  ( s  =  (/)  \/  ph ) } ,  { s  e.  { (/) ,  { (/)
} }  |  ( s  =  { (/) }  \/  ph ) } } A. w  e.  z  E! v  e.  z  E. u  e.  y  ( z  e.  u  /\  v  e.  u )  ->  ( ph  \/  -.  ph )
)
1817exlimiv 1647 . 2  |-  ( E. y A. z  e. 
{ { s  e. 
{ (/) ,  { (/) } }  |  ( s  =  (/)  \/  ph ) } ,  { s  e.  { (/) ,  { (/) } }  |  ( s  =  { (/) }  \/  ph ) } } A. w  e.  z  E! v  e.  z  E. u  e.  y  (
z  e.  u  /\  v  e.  u )  ->  ( ph  \/  -.  ph ) )
199, 18ax-mp 5 1  |-  ( ph  \/  -.  ph )
Colors of variables: wff set class
Syntax hints:   -. wn 3    /\ wa 104    \/ wo 716    = wceq 1398   E.wex 1541    e. wcel 2203   A.wral 2520   E.wrex 2521   E!wreu 2522   {crab 2524   _Vcvv 2813   (/)c0 3508   {csn 3689   {cpr 3690   Oncon0 4484
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 619  ax-in2 620  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-14 2206  ax-ext 2214  ax-sep 4228  ax-nul 4236  ax-pow 4287  ax-pr 4322
This theorem depends on definitions:  df-bi 117  df-3or 1006  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1812  df-eu 2083  df-clab 2219  df-cleq 2225  df-clel 2228  df-nfc 2373  df-ral 2525  df-rex 2526  df-reu 2527  df-rab 2529  df-v 2815  df-sbc 3043  df-dif 3213  df-un 3215  df-in 3217  df-ss 3224  df-nul 3509  df-pw 3671  df-sn 3695  df-pr 3696  df-uni 3915  df-tr 4209  df-iord 4487  df-on 4489  df-suc 4492  df-iota 5312  df-riota 6003
This theorem is referenced by:  acexmid  6049
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