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LeftDoubleBracketingBar \[LeftDoubleBracketingBar]

FilledSmallSquare Alias: AliasIndicatorl||AliasIndicator.

FilledSmallSquare Matchfix operator.

FilledSmallSquare x is by default interpreted as DoubleBracketingBar[x].

FilledSmallSquare Used in mathematics to indicate taking a norm.

FilledSmallSquare Sometimes used for determinant.

FilledSmallSquare Sometimes used to indicate a matrix.

FilledSmallSquare Not the same as \[DoubleVerticalBar].

FilledSmallSquare Drawn in monospaced fonts with a small left-pointing tee to indicate direction.

FilledSmallSquare Extensible character.

FilledSmallSquare See The Mathematica Book: Section 3.10.4.

FilledSmallSquare See also: \[LeftBracketingBar] .