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Theorem cbvixpv 7926
Description: Change bound variable in an indexed Cartesian product. (Contributed by Jeff Madsen, 2-Sep-2009.)
Hypothesis
Ref Expression
cbvixpv.1 (𝑥 = 𝑦𝐵 = 𝐶)
Assertion
Ref Expression
cbvixpv X𝑥𝐴 𝐵 = X𝑦𝐴 𝐶
Distinct variable groups:   𝑥,𝐴,𝑦   𝑦,𝐵   𝑥,𝐶
Allowed substitution hints:   𝐵(𝑥)   𝐶(𝑦)

Proof of Theorem cbvixpv
StepHypRef Expression
1 nfcv 2764 . 2 𝑦𝐵
2 nfcv 2764 . 2 𝑥𝐶
3 cbvixpv.1 . 2 (𝑥 = 𝑦𝐵 = 𝐶)
41, 2, 3cbvixp 7925 1 X𝑥𝐴 𝐵 = X𝑦𝐴 𝐶
Colors of variables: wff setvar class
Syntax hints:  wi 4   = wceq 1483  Xcixp 7908
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1722  ax-4 1737  ax-5 1839  ax-6 1888  ax-7 1935  ax-9 1999  ax-10 2019  ax-11 2034  ax-12 2047  ax-13 2246  ax-ext 2602
This theorem depends on definitions:  df-bi 197  df-or 385  df-an 386  df-3an 1039  df-tru 1486  df-ex 1705  df-nf 1710  df-sb 1881  df-clab 2609  df-cleq 2615  df-clel 2618  df-nfc 2753  df-ral 2917  df-rex 2918  df-rab 2921  df-v 3202  df-dif 3577  df-un 3579  df-in 3581  df-ss 3588  df-nul 3916  df-if 4087  df-sn 4178  df-pr 4180  df-op 4184  df-uni 4437  df-br 4654  df-iota 5851  df-fn 5891  df-fv 5896  df-ixp 7909
This theorem is referenced by:  funcpropd  16560  invfuc  16634  natpropd  16636  dprdw  18409  dprdwd  18410  ptuni2  21379  ptbasin  21380  ptbasfi  21384  ptpjopn  21415  ptclsg  21418  dfac14  21421  ptcnp  21425  ptcmplem2  21857  ptcmpg  21861  prdsxmslem2  22334  upixp  33524  rrxsnicc  40520  ioorrnopn  40525  ioorrnopnxr  40527  ovnsubadd  40786  hoidmvlelem4  40812  hoidmvle  40814  hspdifhsp  40830  hoiqssbllem2  40837  hspmbl  40843  hoimbl  40845  opnvonmbl  40848  ovnovollem3  40872
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