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LeftDoubleBracketingBar
\[LeftDoubleBracketingBar]
  • Alias: l||.
  • Matchfix operator.



  • x is by default interpreted as DoubleBracketingBar[


    x].
  • Used in mathematics to indicate taking a norm.
  • Sometimes used for determinant.
  • Sometimes used to indicate a matrix.
  • Not the same as \[DoubleVerticalBar].
  • Drawn in monospaced fonts with a small left-pointing tee to indicate direction.
  • Extensible character.
  • See The Mathematica Book: Section 3.10.4.
  • See also: \[LeftBracketingBar].


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