Theorem csbief 3173

Description: Conversion of implicit substitution to explicit substitution into a class. (Contributed by NM, 26-Nov-2005.) (Revised by Mario Carneiro, 13-Oct-2016.)

Hypotheses

Ref	Expression
csbief.1	|- A e. _V
csbief.2	|- F/_ x C
csbief.3	|- ( x = A -> B = C )

Assertion

Ref	Expression
csbief	|- [_ A / x ]_ B = C

Distinct variable group:   x, A

Allowed substitution hints:   B( x)   C( x)

Proof of Theorem csbief

Step	Hyp	Ref	Expression
1		csbief.1	. 2 |- A e. _V
2		csbief.2	. . . 4 |- F/_ x C
3	2	a1i 9	. . 3 |- ( A e. _V -> F/_ x C )
4		csbief.3	. . 3 |- ( x = A -> B = C )
5	3, 4	csbiegf 3172	. 2 |- ( A e. _V -> [_ A / x ]_ B = C )
6	1, 5	ax-mp 5	1 |- [_ A / x ]_ B = C

Syntax hints:   -> wi 4   = wceq 1398   e. wcel 2202   F/_wnfc 2362   _Vcvv 2803   [_csb 3128

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 717  ax-5 1496  ax-7 1497  ax-gen 1498  ax-ie1 1542  ax-ie2 1543  ax-8 1553  ax-10 1554  ax-11 1555  ax-i12 1556  ax-bndl 1558  ax-4 1559  ax-17 1575  ax-i9 1579  ax-ial 1583  ax-i5r 1584  ax-ext 2213

This theorem depends on definitions:  df-bi 117  df-3an 1007  df-tru 1401  df-nf 1510  df-sb 1811  df-clab 2218  df-cleq 2224  df-clel 2227  df-nfc 2364  df-v 2805  df-sbc 3033  df-csb 3129

This theorem is referenced by:  csbie  3174  csbing  3416  csbopabg  4172  pofun  4415  csbima12g  5104  csbiotag  5326  csbriotag  5995  csbov123g  6067  eqerlem  6776  zsumdc  12008