Theorem riotabidva 6056

Description: Equivalent wff's yield equal restricted class abstractions (deduction form). (rabbidva 2809 analog.) (Contributed by NM, 17-Jan-2012.)

Hypothesis

Ref	Expression
riotabidva.1	|- ( ( ph /\ x e. A ) -> ( ps <-> ch ) )

Assertion

Ref	Expression
riotabidva	|- ( ph -> ( iota_ x e. A ps ) = ( iota_ x e. A ch ) )

Distinct variable group:   ph, x

Allowed substitution hints:   ps( x)   ch( x)   A( x)

Proof of Theorem riotabidva

Step	Hyp	Ref	Expression
1		riotabidva.1	. . . 4 |- ( ( ph /\ x e. A ) -> ( ps <-> ch ) )
2	1	pm5.32da 456	. . 3 |- ( ph -> ( ( x e. A /\ ps ) <-> ( x e. A /\ ch ) ) )
3	2	iotabidv 5360	. 2 |- ( ph -> ( iota x ( x e. A /\ ps ) ) = ( iota x ( x e. A /\ ch ) ) )
4		df-riota 6038	. 2 |- ( iota_ x e. A ps ) = ( iota x ( x e. A /\ ps ) )
5		df-riota 6038	. 2 |- ( iota_ x e. A ch ) = ( iota x ( x e. A /\ ch ) )
6	3, 4, 5	3eqtr4g 2296	1 |- ( ph -> ( iota_ x e. A ps ) = ( iota_ x e. A ch ) )

This proof depends on syntax axioms:   -> wi 4   /\ wa 104   <-> wb 105   = wceq 1402   e. wcel 2209   iotacio 5335   iota_crio 6037

This proof depends on axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-ia1 106  ax-ia2 107  ax-ia3 108  ax-io 721  ax-5 1500  ax-7 1501  ax-gen 1502  ax-ie1 1546  ax-ie2 1547  ax-8 1557  ax-10 1558  ax-11 1559  ax-i12 1560  ax-bndl 1562  ax-4 1563  ax-17 1579  ax-i9 1583  ax-ial 1587  ax-i5r 1588  ax-ext 2220

This proof depends on definitions:  df-bi 117  df-tru 1405  df-nf 1514  df-sb 1816  df-clab 2225  df-cleq 2231  df-clel 2234  df-nfc 2381  df-rex 2534  df-uni 3936  df-iota 5337  df-riota 6038

This theorem is used by:  riotabiia  6057  divfnzn  10021  grpinvpropdg  13880  oppr1g  14388