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Theorem prodeq1d 12331
Description: Equality deduction for product. (Contributed by Scott Fenton, 4-Dec-2017.)
Hypothesis
Ref Expression
prodeq1d.1  |-  ( ph  ->  A  =  B )
Assertion
Ref Expression
prodeq1d  |-  ( ph  ->  prod_ k  e.  A  C  =  prod_ k  e.  B  C )
Distinct variable groups:    A, k    B, k
Allowed substitution hints:    ph( k)    C( k)

Proof of Theorem prodeq1d
StepHypRef Expression
1 prodeq1d.1 . 2  |-  ( ph  ->  A  =  B )
2 prodeq1 12320 . 2  |-  ( A  =  B  ->  prod_ k  e.  A  C  = 
prod_ k  e.  B  C )
31, 2syl 14 1  |-  ( ph  ->  prod_ k  e.  A  C  =  prod_ k  e.  B  C )
Colors of variables:    wff set class
This proof depends on syntax axioms:    -> wi 4    = wceq 1402   prod_cprod 12317
This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-in1 623  ax-in2 624  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-dc 847  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-v 2823  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-f 5381  df-f1 5382  df-fo 5383  df-f1o 5384  df-fv 5385  df-ov 6088  df-oprab 6089  df-mpo 6090  df-recs 6576  df-frec 6662  df-seqfrec 10885  df-proddc 12318
This theorem is used by:  prodeq12dv  12336  prodeq12rdv  12337  fprodf1o  12355  fprod1  12361  fprodp1  12367  fprodcl2lem  12372  fprodfac  12382  fprodabs  12383  fprod2d  12390  fprodcom2fi  12393  eulerthlemrprm  13007  eulerthlema  13008  gausslemma2dlem4  16183
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