Mathematical Left White Square Bracket Symbol
⟦ is a white square bracket used as a left delimiter in mathematical and formal notation.
U+27E6
⟦ (MATHEMATICAL LEFT WHITE SQUARE BRACKET) is a Unicode math symbol that looks like an open, white square bracket. It’s commonly used as a paired delimiter with a matching right bracket. Below are practical ways to copy and use it in text, design, and code.
Mathematical Left White Square Bracket Symbol Meaning
⟦ is the Unicode character U+27E6, named MATHEMATICAL LEFT WHITE SQUARE BRACKET. In practice, it functions as a “left” delimiter—similar to a square bracket but with a specific white/outlined style intended for mathematical or formal typesetting. It often appears in contexts where writers want distinct, typographically clean grouping marks, such as interval-like notations, structured expressions, or custom bracket styles in documents and exercises. Because it’s a Unicode symbol, it can be reliably copied into text editors, web content, and programming languages that support Unicode.
Common uses
- •Use as a left delimiter for mathematical expressions or grouped terms in plain text.
- •Add a typographic “white bracket” style in educational worksheets or problem statements.
- •Mark quoted or structured segments in technical writing where square brackets are already used.
- •Create visual grouping in UI mockups, labels, or diagram text that needs clear delimiters.
- •Insert in code comments, documentation, or markdown to denote structured placeholders.
Examples
⟦ Mathematical Left White Square Bracket
- ⟦⟦x, y⟧ represents a pair in this notation.
- ⟦Let A = ⟦a_i⟧ for i from 1 to n.
- ⟦We define the set as ⟦S⟧ using our bracket convention.
- ⟦The expression ⟦f(t)⟧ must be evaluated first.
- ⟦Output format: ⟦result⟧.
Variations
Ready to copy
Technical codes
| Unicode | U+27E6 | |
| HTML Entity | ⟦ | |
| HTML Code | ⟦ | |
| CSS | \27E6 | |
| Alt Code | Alt + 10214 | |
| Decimal | 10214 |
How to type Mathematical Left White Square Bracket Symbol (⟦)
On Windows
Hold Alt and type 10214 on the numeric keypad. In Word, type 27E6 then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 27E6. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 27e6, then press Enter or Space.
Anywhere
Copy ⟦ with the button above and paste it wherever you need it — this works on every device and in every app, with no keyboard shortcut to remember.
FAQ
What does the Mathematical Left White Square Bracket symbol mean?
⟦ is the Unicode character U+27E6, named MATHEMATICAL LEFT WHITE SQUARE BRACKET. In practice, it functions as a “left” delimiter—similar to a square bracket but with a specific white/outlined style intended for mathematical or formal typesetting. It often appears in contexts where writers want distinct, typographically clean grouping marks, such as interval-like notations, structured expressions, or custom bracket styles in documents and exercises. Because it’s a Unicode symbol, it can be reliably copied into text editors, web content, and programming languages that support Unicode.
What is the Unicode code point for ⟦?
It is U+27E6, named MATHEMATICAL LEFT WHITE SQUARE BRACKET.
How can I copy ⟦ into HTML?
Use the HTML entity: ⟦
What is the CSS escape for this symbol?
The CSS escape is: \\27E6
Is ⟦ meant to be used with a matching right bracket?
Yes—by convention it is typically paired with the corresponding right white square bracket for a complete delimiter.