ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  a1dd Structured version   Unicode version

Theorem a1dd 42
Description: Deduction introducing a nested embedded antecedent. (Contributed by NM, 17-Dec-2004.) (Proof shortened by O'Cat, 15-Jan-2008.)
Hypothesis
Ref Expression
a1dd.1
Assertion
Ref Expression
a1dd

Proof of Theorem a1dd
StepHypRef Expression
1 a1dd.1 . 2
2 ax-1 5 . 2
31, 2syl6 29 1
Colors of variables: wff set class
Syntax hints:   wi 4
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7
This theorem is referenced by:  nnsub  7713  difelfzle  8742  bj-inf2vnlem2  9401
  Copyright terms: Public domain W3C validator