Theorem ralrimdvva 2446

Description: Inference from Theorem 19.21 of [Margaris] p. 90. (Restricted quantifier version with double quantification.) (Contributed by NM, 2-Feb-2008.)

Hypothesis

Ref	Expression
ralrimdvva.1	|- ( ( ph /\ ( x e. A /\ y e. B ) ) -> ( ps -> ch ) )

Assertion

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

Distinct variable groups:   x, y, ph   ps, x, y   y, A

Allowed substitution hints:   ch( x, y)   A( x)   B( x, y)

Proof of Theorem ralrimdvva

Step	Hyp	Ref	Expression
1		ralrimdvva.1	. . . 4 |- ( ( ph /\ ( x e. A /\ y e. B ) ) -> ( ps -> ch ) )
2	1	ex 113	. . 3 |- ( ph -> ( ( x e. A /\ y e. B ) -> ( ps -> ch ) ) )
3	2	com23 77	. 2 |- ( ph -> ( ps -> ( ( x e. A /\ y e. B ) -> ch ) ) )
4	3	ralrimdvv 2445	1 |- ( ph -> ( ps -> A. x e. A A. y e. B ch ) )

Syntax hints:   -> wi 4   /\ wa 102   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-4 1440  ax-17 1459

This theorem depends on definitions:  df-bi 115  df-nf 1390  df-ral 2353

This theorem is referenced by:  isosolem  5483  isotilem  6419