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Theorem cbvsumv 12129
Description: Change bound variable in a sum. (Contributed by NM, 11-Dec-2005.) (Revised by Mario Carneiro, 13-Jul-2013.)
Hypothesis
Ref Expression
cbvsum.1  |-  ( j  =  k  ->  B  =  C )
Assertion
Ref Expression
cbvsumv  |-  sum_ j  e.  A  B  =  sum_ k  e.  A  C
Distinct variable groups:    A, j, k    B, k    C, j
Allowed substitution hints:    B( j)    C( k)

Proof of Theorem cbvsumv
StepHypRef Expression
1 cbvsum.1 . 2  |-  ( j  =  k  ->  B  =  C )
2 nfcv 2392 . 2  |-  F/_ k A
3 nfcv 2392 . 2  |-  F/_ j A
4 nfcv 2392 . 2  |-  F/_ k B
5 nfcv 2392 . 2  |-  F/_ j C
61, 2, 3, 4, 5cbvsum 12128 1  |-  sum_ j  e.  A  B  =  sum_ k  e.  A  C
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    = wceq 1402   sum_csu 12121
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220
This proof depends on definitions:  df-bi 117  df-3an 1011  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-ral 2533  df-rex 2534  df-rab 2537  df-v 2823  df-sbc 3052  df-csb 3148  df-un 3224  df-in 3226  df-ss 3233  df-if 3639  df-sn 3715  df-pr 3716  df-op 3718  df-uni 3936  df-br 4131  df-opab 4193  df-mpt 4194  df-cnv 4782  df-dm 4784  df-rn 4785  df-res 4786  df-iota 5337  df-fv 5385  df-ov 6088  df-oprab 6089  df-mpo 6090  df-recs 6576  df-frec 6662  df-seqfrec 10887  df-sumdc 12122
This theorem is used by:  isumge0  12199  telfsumo  12235  fsumparts  12239  binomlem  12252  mertenslemi1  12304  mertenslem2  12305  mertensabs  12306  efaddlem  12443  plymullem1  15851  plyadd  15854  plymul  15855  plycoeid3  15860  plyco  15862  plycj  15864  dvply1  15868  trilpo  17104  redcwlpo  17117  nconstwlpo  17128  neapmkv  17130
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