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Theorem cbvsumv 12153
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 12152 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 12145
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 4132  df-opab 4194  df-mpt 4195  df-cnv 4784  df-dm 4786  df-rn 4787  df-res 4788  df-iota 5340  df-fv 5388  df-ov 6091  df-oprab 6092  df-mpo 6093  df-recs 6580  df-frec 6666  df-seqfrec 10907  df-sumdc 12146
This theorem is used by:  isumge0  12223  telfsumo  12259  fsumparts  12263  binomlem  12276  mertenslemi1  12328  mertenslem2  12329  mertensabs  12330  efaddlem  12467  plymullem1  15986  plyadd  15989  plymul  15990  plycoeid3  15995  plyco  15997  plycj  15999  dvply1  16003  trilpo  17311  redcwlpo  17324  nconstwlpo  17335  neapmkv  17337
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