MPE Home Metamath Proof Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  MPE Home  >  Th. List  >  kmlem10 Unicode version

Theorem kmlem10 7785
Description: Lemma for 5-quantifier AC of Kurt Maes, Th. 4, part of 3 => 4. (Contributed by NM, 25-Mar-2004.)
Hypothesis
Ref Expression
kmlem9.1  |-  A  =  { u  |  E. t  e.  x  u  =  ( t  \  U. ( x  \  {
t } ) ) }
Assertion
Ref Expression
kmlem10  |-  ( A. h ( A. z  e.  h  A. w  e.  h  ( z  =/=  w  ->  ( z  i^i  w )  =  (/) )  ->  E. y A. z  e.  h  ph )  ->  E. y A. z  e.  A  ph )
Distinct variable groups:    x, y,
z, w, u, t, h    y, A, z, w, h    ph, h
Allowed substitution hints:    ph( x, y, z, w, u, t)    A( x, u, t)

Proof of Theorem kmlem10
StepHypRef Expression
1 kmlem9.1 . . 3  |-  A  =  { u  |  E. t  e.  x  u  =  ( t  \  U. ( x  \  {
t } ) ) }
21kmlem9 7784 . 2  |-  A. z  e.  A  A. w  e.  A  ( z  =/=  w  ->  ( z  i^i  w )  =  (/) )
3 vex 2791 . . . . 5  |-  x  e. 
_V
43abrexex 5763 . . . 4  |-  { u  |  E. t  e.  x  u  =  ( t  \  U. ( x  \  { t } ) ) }  e.  _V
51, 4eqeltri 2353 . . 3  |-  A  e. 
_V
6 raleq 2736 . . . . 5  |-  ( h  =  A  ->  ( A. w  e.  h  ( z  =/=  w  ->  ( z  i^i  w
)  =  (/) )  <->  A. w  e.  A  ( z  =/=  w  ->  ( z  i^i  w )  =  (/) ) ) )
76raleqbi1dv 2744 . . . 4  |-  ( h  =  A  ->  ( A. z  e.  h  A. w  e.  h  ( z  =/=  w  ->  ( z  i^i  w
)  =  (/) )  <->  A. z  e.  A  A. w  e.  A  ( z  =/=  w  ->  ( z  i^i  w )  =  (/) ) ) )
8 raleq 2736 . . . . 5  |-  ( h  =  A  ->  ( A. z  e.  h  ph  <->  A. z  e.  A  ph ) )
98exbidv 1612 . . . 4  |-  ( h  =  A  ->  ( E. y A. z  e.  h  ph  <->  E. y A. z  e.  A  ph ) )
107, 9imbi12d 311 . . 3  |-  ( h  =  A  ->  (
( A. z  e.  h  A. w  e.  h  ( z  =/=  w  ->  ( z  i^i  w )  =  (/) )  ->  E. y A. z  e.  h  ph )  <->  ( A. z  e.  A  A. w  e.  A  (
z  =/=  w  -> 
( z  i^i  w
)  =  (/) )  ->  E. y A. z  e.  A  ph ) ) )
115, 10spcv 2874 . 2  |-  ( A. h ( A. z  e.  h  A. w  e.  h  ( z  =/=  w  ->  ( z  i^i  w )  =  (/) )  ->  E. y A. z  e.  h  ph )  -> 
( A. z  e.  A  A. w  e.  A  ( z  =/=  w  ->  ( z  i^i  w )  =  (/) )  ->  E. y A. z  e.  A  ph ) )
122, 11mpi 16 1  |-  ( A. h ( A. z  e.  h  A. w  e.  h  ( z  =/=  w  ->  ( z  i^i  w )  =  (/) )  ->  E. y A. z  e.  h  ph )  ->  E. y A. z  e.  A  ph )
Colors of variables: wff set class
Syntax hints:    -> wi 4   A.wal 1527   E.wex 1528    = wceq 1623   {cab 2269    =/= wne 2446   A.wral 2543   E.wrex 2544   _Vcvv 2788    \ cdif 3149    i^i cin 3151   (/)c0 3455   {csn 3640   U.cuni 3827
This theorem is referenced by:  kmlem13  7788
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-13 1686  ax-14 1688  ax-6 1703  ax-7 1708  ax-11 1715  ax-12 1866  ax-ext 2264  ax-rep 4131  ax-sep 4141  ax-nul 4149  ax-pr 4214  ax-un 4512
This theorem depends on definitions:  df-bi 177  df-or 359  df-an 360  df-3an 936  df-tru 1310  df-ex 1529  df-nf 1532  df-sb 1630  df-eu 2147  df-mo 2148  df-clab 2270  df-cleq 2276  df-clel 2279  df-nfc 2408  df-ne 2448  df-ral 2548  df-rex 2549  df-reu 2550  df-rab 2552  df-v 2790  df-sbc 2992  df-csb 3082  df-dif 3155  df-un 3157  df-in 3159  df-ss 3166  df-nul 3456  df-if 3566  df-sn 3646  df-pr 3647  df-op 3649  df-uni 3828  df-iun 3907  df-br 4024  df-opab 4078  df-mpt 4079  df-id 4309  df-xp 4695  df-rel 4696  df-cnv 4697  df-co 4698  df-dm 4699  df-rn 4700  df-res 4701  df-ima 4702  df-iota 5219  df-fun 5257  df-fn 5258  df-f 5259  df-f1 5260  df-fo 5261  df-f1o 5262  df-fv 5263
  Copyright terms: Public domain W3C validator