ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  ralrimdv Unicode version

Theorem ralrimdv 2441
Description: Inference from Theorem 19.21 of [Margaris] p. 90. (Restricted quantifier version.) (Contributed by NM, 27-May-1998.)
Hypothesis
Ref Expression
ralrimdv.1  |-  ( ph  ->  ( ps  ->  (
x  e.  A  ->  ch ) ) )
Assertion
Ref Expression
ralrimdv  |-  ( ph  ->  ( ps  ->  A. x  e.  A  ch )
)
Distinct variable groups:    ph, x    ps, x
Allowed substitution hints:    ch( x)    A( x)

Proof of Theorem ralrimdv
StepHypRef Expression
1 nfv 1462 . 2  |-  F/ x ph
2 nfv 1462 . 2  |-  F/ x ps
3 ralrimdv.1 . 2  |-  ( ph  ->  ( ps  ->  (
x  e.  A  ->  ch ) ) )
41, 2, 3ralrimd 2440 1  |-  ( ph  ->  ( ps  ->  A. x  e.  A  ch )
)
Colors of variables: wff set class
Syntax hints:    -> wi 4    e. wcel 1434   A.wral 2349
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 1377  ax-gen 1379  ax-4 1441  ax-17 1460
This theorem depends on definitions:  df-bi 115  df-nf 1391  df-ral 2354
This theorem is referenced by:  ralrimdva  2442  ralrimivv  2443  nneneq  6382  fzrevral  9187
  Copyright terms: Public domain W3C validator