Theorem ralimdv2 2431

Description: Inference quantifying both antecedent and consequent. (Contributed by NM, 1-Feb-2005.)

Hypothesis

Ref	Expression
ralimdv2.1	|- ( ph -> ( ( x e. A -> ps ) -> ( x e. B -> ch ) ) )

Assertion

Ref	Expression
ralimdv2	|- ( ph -> ( A. x e. A ps -> A. x e. B ch ) )

Distinct variable group:   ph, x

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

Proof of Theorem ralimdv2

Step	Hyp	Ref	Expression
1		ralimdv2.1	. . 3 |- ( ph -> ( ( x e. A -> ps ) -> ( x e. B -> ch ) ) )
2	1	alimdv 1800	. 2 |- ( ph -> ( A. x ( x e. A -> ps ) -> A. x ( x e. B -> ch ) ) )
3		df-ral 2353	. 2 |- ( A. x e. A ps <-> A. x ( x e. A -> ps ) )
4		df-ral 2353	. 2 |- ( A. x e. B ch <-> A. x ( x e. B -> ch ) )
5	2, 3, 4	3imtr4g 203	1 |- ( ph -> ( A. x e. A ps -> A. x e. B ch ) )

Syntax hints:   -> wi 4   A.wal 1282   e. wcel 1433   A.wral 2348

This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 104  ax-ia2 105  ax-ia3 106  ax-5 1376  ax-gen 1378  ax-17 1459

This theorem depends on definitions:  df-bi 115  df-ral 2353

This theorem is referenced by:  ssralv  3058  r19.29uz  9878