Theorem prodeq1 15255

Description: Equality theorem for a product. (Contributed by Scott Fenton, 1-Dec-2017.)

Assertion

Ref	Expression
prodeq1	⊢ (𝐴 = 𝐵 → ∏𝑘 ∈ 𝐴 𝐶 = ∏𝑘 ∈ 𝐵 𝐶)

Distinct variable groups:   𝐴,𝑘   𝐵,𝑘

Allowed substitution hint:   𝐶(𝑘)

Proof of Theorem prodeq1

Step	Hyp	Ref	Expression
1		nfcv 2955	. 2 ⊢ Ⅎ𝑘𝐴
2		nfcv 2955	. 2 ⊢ Ⅎ𝑘𝐵
3	1, 2	prodeq1f 15254	1 ⊢ (𝐴 = 𝐵 → ∏𝑘 ∈ 𝐴 𝐶 = ∏𝑘 ∈ 𝐵 𝐶)

Syntax hints:   → wi 4   = wceq 1538  ∏cprod 15251

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8  ax-gen 1797  ax-4 1811  ax-5 1911  ax-6 1970  ax-7 2015  ax-8 2113  ax-9 2121  ax-10 2142  ax-11 2158  ax-12 2175  ax-ext 2770

This theorem depends on definitions:  df-bi 210  df-an 400  df-or 845  df-3an 1086  df-tru 1541  df-ex 1782  df-nf 1786  df-sb 2070  df-clab 2777  df-cleq 2791  df-clel 2870  df-nfc 2938  df-ral 3111  df-rex 3112  df-rab 3115  df-v 3443  df-un 3886  df-in 3888  df-ss 3898  df-if 4426  df-sn 4526  df-pr 4528  df-op 4532  df-uni 4801  df-br 5031  df-opab 5093  df-mpt 5111  df-xp 5525  df-cnv 5527  df-dm 5529  df-rn 5530  df-res 5531  df-ima 5532  df-pred 6116  df-iota 6283  df-f 6328  df-f1 6329  df-fo 6330  df-f1o 6331  df-fv 6332  df-ov 7138  df-oprab 7139  df-mpo 7140  df-wrecs 7930  df-recs 7991  df-rdg 8029  df-seq 13365  df-prod 15252

This theorem is referenced by:  prodeq1i  15264  prodeq1d  15267  prod1  15290  fprodf1o  15292  fprodss  15294  fprodcllem  15297  fprodmul  15306  fproddiv  15307  fprodconst  15324  fprodn0  15325  fprod2d  15327  fprodmodd  15343  coprmprod  15995  coprmproddvds  15997  fprodexp  42236  fprodabs2  42237  mccl  42240  fprodcn  42242  fprodcncf  42542  dvmptfprod  42587  dvnprodlem3  42590  hoidmvval  43216  ovnhoi  43242  hspmbllem2  43266  fmtnorec2  44060