Theorem nfriotadxy 5931

Description: Deduction version of nfriota 5932. (Contributed by Jim Kingdon, 12-Jan-2019.)

Hypotheses

Ref	Expression
nfriotadxy.1	|- F/ y ph
nfriotadxy.2	|- ( ph -> F/ x ps )
nfriotadxy.3	|- ( ph -> F/_ x A )

Assertion

Ref	Expression
nfriotadxy	|- ( ph -> F/_ x ( iota_ y e. A ps ) )

Distinct variable group:   x, y

Allowed substitution hints:   ph( x, y)   ps( x, y)   A( x, y)

Proof of Theorem nfriotadxy

Step	Hyp	Ref	Expression
1		df-riota 5922	. 2 |- ( iota_ y e. A ps ) = ( iota y ( y e. A /\ ps ) )
2		nfriotadxy.1	. . 3 |- F/ y ph
3		nfcv 2350	. . . . . 6 |- F/_ x y
4	3	a1i 9	. . . . 5 |- ( ph -> F/_ x y )
5		nfriotadxy.3	. . . . 5 |- ( ph -> F/_ x A )
6	4, 5	nfeld 2366	. . . 4 |- ( ph -> F/ x y e. A )
7		nfriotadxy.2	. . . 4 |- ( ph -> F/ x ps )
8	6, 7	nfand 1592	. . 3 |- ( ph -> F/ x ( y e. A /\ ps ) )
9	2, 8	nfiotadw 5254	. 2 |- ( ph -> F/_ x ( iota y ( y e. A /\ ps ) ) )
10	1, 9	nfcxfrd 2348	1 |- ( ph -> F/_ x ( iota_ y e. A ps ) )

Syntax hints:   -> wi 4   /\ wa 104   F/wnf 1484   e. wcel 2178   F/_wnfc 2337   iotacio 5249   iota_crio 5921

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 711  ax-5 1471  ax-7 1472  ax-gen 1473  ax-ie1 1517  ax-ie2 1518  ax-8 1528  ax-10 1529  ax-11 1530  ax-i12 1531  ax-bndl 1533  ax-4 1534  ax-17 1550  ax-i9 1554  ax-ial 1558  ax-i5r 1559  ax-ext 2189

This theorem depends on definitions:  df-bi 117  df-tru 1376  df-nf 1485  df-sb 1787  df-clab 2194  df-cleq 2200  df-clel 2203  df-nfc 2339  df-rex 2492  df-sn 3649  df-uni 3865  df-iota 5251  df-riota 5922

This theorem is referenced by:  nfriota  5932