Mathematical Left White Square Bracket
Part of Math Symbols
Mathematical Left White Square Bracket has no standard Windows Alt code. Copy the character directly, or use its HTML entity or Unicode value instead.
- Alt code
- None
- HTML entity
- ⟦
- Unicode
- U+27E6
About this symbol
⟦ and ⟧, the double square brackets, are known as semantic brackets. In computer science, ⟦e⟧ means the meaning of the expression e, a notation that grew from the work of Christopher Strachey and Dana Scott on the meaning of programming languages in the late 1960s and 1970s.
Unicode facts
- Official name
- MATHEMATICAL LEFT WHITE SQUARE BRACKET
- Also called
- Z notation left bag bracket
- Type
- Opening bracket
- Unicode block
- Miscellaneous Mathematical Symbols-A
- Unicode group
- Mathematical brackets
- Added in
- Unicode 3.2 (2002)
- Related
- 〚 Left White Square Bracket U+301A
Click the symbol or any value at the top of the page to copy it. See the full Math Symbols chart for related characters.