NFE Home New Foundations Explorer < Previous   Next >
Nearby theorems
Mirrors  >  Home  >  NFE Home  >  Th. List  >  3mix1i Unicode version

Theorem 3mix1i 1127
Description: Introduction in triple disjunction. (Contributed by Mario Carneiro, 6-Oct-2014.)
Hypothesis
Ref Expression
3mixi.1
Assertion
Ref Expression
3mix1i

Proof of Theorem 3mix1i
StepHypRef Expression
1 3mixi.1 . 2
2 3mix1 1124 . 2
31, 2ax-mp 5 1
Colors of variables: wff setvar class
Syntax hints:   w3o 933
This theorem was proved from axioms:  ax-mp 5  ax-1 6  ax-2 7  ax-3 8
This theorem depends on definitions:  df-bi 177  df-or 359  df-3or 935
This theorem is referenced by:  tpid1  3829
  Copyright terms: Public domain W3C validator