ILE Home Intuitionistic Logic Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  ILE Home  >  Th. List  >  pm1.2 Structured version   Unicode version

Theorem pm1.2 672
Description: Axiom *1.2 (Taut) of [WhiteheadRussell] p. 96. (Contributed by NM, 3-Jan-2005.) (Revised by NM, 10-Mar-2013.)
Assertion
Ref Expression
pm1.2

Proof of Theorem pm1.2
StepHypRef Expression
1 id 19 . 2
21, 1jaoi 635 1
Colors of variables: wff set class
Syntax hints:   wi 4   wo 628
This theorem was proved from axioms:  ax-1 5  ax-2 6  ax-mp 7  ax-ia1 99  ax-ia2 100  ax-ia3 101  ax-io 629
This theorem depends on definitions:  df-bi 110
This theorem is referenced by:  oridm  673  sbequi  1717  swoer  6070
  Copyright terms: Public domain W3C validator