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Theorem ixpintm 6893
Description: The intersection of a collection of infinite Cartesian products. (Contributed by Mario Carneiro, 3-Feb-2015.) (Revised by Jim Kingdon, 15-Feb-2023.)
Assertion
Ref Expression
ixpintm  |-  ( E. z  z  e.  B  -> 
X_ x  e.  A  |^| B  =  |^|_ y  e.  B  X_ x  e.  A  y )
Distinct variable groups:    x, y, A   
x, B, y    y,
z, B
Allowed substitution hint:    A( z)

Proof of Theorem ixpintm
StepHypRef Expression
1 ixpeq2 6880 . . 3  |-  ( A. x  e.  A  |^| B  =  |^|_ y  e.  B  y  ->  X_ x  e.  A  |^| B  = 
X_ x  e.  A  |^|_ y  e.  B  y )
2 intiin 4025 . . . 4  |-  |^| B  =  |^|_ y  e.  B  y
32a1i 9 . . 3  |-  ( x  e.  A  ->  |^| B  =  |^|_ y  e.  B  y )
41, 3mprg 2589 . 2  |-  X_ x  e.  A  |^| B  = 
X_ x  e.  A  |^|_ y  e.  B  y
5 ixpiinm 6892 . 2  |-  ( E. z  z  e.  B  -> 
X_ x  e.  A  |^|_ y  e.  B  y  =  |^|_ y  e.  B  X_ x  e.  A  y )
64, 5eqtrid 2276 1  |-  ( E. z  z  e.  B  -> 
X_ x  e.  A  |^| B  =  |^|_ y  e.  B  X_ x  e.  A  y )
Colors of variables: wff set class
Syntax hints:    -> wi 4    = wceq 1397   E.wex 1540    e. wcel 2202   |^|cint 3928   |^|_ciin 3971   X_cixp 6866
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-io 716  ax-5 1495  ax-7 1496  ax-gen 1497  ax-ie1 1541  ax-ie2 1542  ax-8 1552  ax-10 1553  ax-11 1554  ax-i12 1555  ax-bndl 1557  ax-4 1558  ax-17 1574  ax-i9 1578  ax-ial 1582  ax-i5r 1583  ax-13 2204  ax-14 2205  ax-ext 2213  ax-sep 4207  ax-pow 4264  ax-pr 4299  ax-un 4530
This theorem depends on definitions:  df-bi 117  df-3an 1006  df-tru 1400  df-nf 1509  df-sb 1811  df-eu 2082  df-mo 2083  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2363  df-ral 2515  df-rex 2516  df-v 2804  df-un 3204  df-in 3206  df-ss 3213  df-pw 3654  df-sn 3675  df-pr 3676  df-op 3678  df-uni 3894  df-int 3929  df-iin 3973  df-br 4089  df-opab 4151  df-rel 4732  df-cnv 4733  df-co 4734  df-dm 4735  df-rn 4736  df-iota 5286  df-fun 5328  df-fn 5329  df-fv 5334  df-ixp 6867
This theorem is referenced by: (None)
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