\[LeftRightArrow]

  • Unicode: 2194.
  • Alias: <->.
  • Infix arrow operator.
  • x y is by default interpreted as LeftRightArrow[x,y].
  • Used in mathematics for various notions of equivalence and equality.
  • Extensible character.
  • \[LeftRightArrow] is not the same as \[TwoWayRule].