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NotDoubleVerticalBar

\[NotDoubleVerticalBar]
  • 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].