MATHEMATICA CHARACTER NAME
\[RightDoubleBracketingBar]
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- Unicode: F606.
- Alias: Escr||Esc.
- 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 right-pointing tee to indicate direction.
- Extensible character.
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