Theorem spcimegf 2807

Description: Existential specialization, using implicit substitution. (Contributed by Mario Carneiro, 4-Jan-2017.)

Hypotheses

Ref	Expression
spcimgf.1	|- F/_ x A
spcimgf.2	|- F/ x ps
spcimegf.3	|- ( x = A -> ( ps -> ph ) )

Assertion

Ref	Expression
spcimegf	|- ( A e. V -> ( ps -> E. x ph ) )

Proof of Theorem spcimegf

Step	Hyp	Ref	Expression
1		spcimgf.2	. . 3 |- F/ x ps
2		spcimgf.1	. . 3 |- F/_ x A
3	1, 2	spcimegft 2804	. 2 |- ( A. x ( x = A -> ( ps -> ph ) ) -> ( A e. V -> ( ps -> E. x ph ) ) )
4		spcimegf.3	. 2 |- ( x = A -> ( ps -> ph ) )
5	3, 4	mpg 1439	1 |- ( A e. V -> ( ps -> E. x ph ) )

Syntax hints:   -> wi 4   = wceq 1343   F/wnf 1448   E.wex 1480   e. wcel 2136   F/_wnfc 2295

This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 105  ax-ia2 106  ax-ia3 107  ax-io 699  ax-5 1435  ax-7 1436  ax-gen 1437  ax-ie1 1481  ax-ie2 1482  ax-8 1492  ax-10 1493  ax-11 1494  ax-i12 1495  ax-bndl 1497  ax-4 1498  ax-17 1514  ax-i9 1518  ax-ial 1522  ax-i5r 1523  ax-ext 2147

This theorem depends on definitions:  df-bi 116  df-tru 1346  df-nf 1449  df-sb 1751  df-clab 2152  df-cleq 2158  df-clel 2161  df-nfc 2297  df-v 2728

This theorem is referenced by: (None)