This is documentation for Mathematica 3, which was
based on an earlier version of the Wolfram Language.
View current documentation (Version 11.2)
 Documentation / Mathematica / The Mathematica Book / Reference Guide / Listing of Named Characters  /

  • Alias: !||.
  • Infix operator.
  • x

    y is by default interpreted as NotDoubleVerticalBar[x,y].
  • Used in geometry to mean "not parallel to".
  • See The Mathematica Book: Section 3.10.4.
  • See also: \[DoubleVerticalBar], \[NotVerticalBar], \[UpTee].