Theorem csbie 3863

Description: Conversion of implicit substitution to explicit substitution into a class. (Contributed by AV, 2-Dec-2019.)

Hypotheses

Ref	Expression
csbie.1	⊢ 𝐴 ∈ V
csbie.2	⊢ (𝑥 = 𝐴 → 𝐵 = 𝐶)

Assertion

Ref	Expression
csbie	⊢ ⦋𝐴 / 𝑥⦌𝐵 = 𝐶

Distinct variable groups:   𝑥,𝐴   𝑥,𝐶

Allowed substitution hint:   𝐵(𝑥)

Proof of Theorem csbie

Step	Hyp	Ref	Expression
1		csbie.1	. 2 ⊢ 𝐴 ∈ V
2		nfcv 2955	. 2 ⊢ Ⅎ𝑥𝐶
3		csbie.2	. 2 ⊢ (𝑥 = 𝐴 → 𝐵 = 𝐶)
4	1, 2, 3	csbief 3862	1 ⊢ ⦋𝐴 / 𝑥⦌𝐵 = 𝐶

Syntax hints:   → wi 4   = wceq 1538   ∈ wcel 2111  Vcvv 3441  ⦋csb 3828

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-v 3443  df-sbc 3721  df-csb 3829

This theorem is referenced by:  pofun  5455  eqerlem  8306  mptnn0fsuppd  13361  fsum  15069  fsumcnv  15120  fsumshftm  15128  fsum0diag2  15130  fprod  15287  fprodcnv  15329  bpolyval  15395  ruclem1  15576  odfval  18652  odval  18654  psrass1lem  20615  selvval  20790  mamufval  20992  pm2mpval  21400  isibl  24369  dfitg  24373  dvfsumlem2  24630  fsumdvdsmul  25780  disjxpin  30351  poimirlem1  35058  poimirlem5  35062  poimirlem15  35072  poimirlem16  35073  poimirlem17  35074  poimirlem19  35076  poimirlem20  35077  poimirlem22  35079  poimirlem24  35081  poimirlem28  35085  fphpd  39757  monotuz  39882  oddcomabszz  39885  fnwe2val  39993  fnwe2lem1  39994