Mathematical Left Double Angle Bracket Symbol
⟪ is the mathematical left double angle bracket used for specialized bracket-like notation.
U+27EA
The symbol ⟪ is the MATHEMATICAL LEFT DOUBLE ANGLE BRACKET (U+27EA). It’s commonly used in technical writing and mathematical expressions where “double angle” notation is needed. This page helps you copy it reliably and understand typical usage patterns.
Mathematical Left Double Angle Bracket Symbol Meaning
⟪ (MATHEMATICAL LEFT DOUBLE ANGLE BRACKET, U+27EA) is a bracket symbol shaped like a left-pointing “double angle” delimiter. It’s primarily used in mathematics and formal notation to mark structured text, ranges, or special operators that have matching right-side counterparts (typically ⟫). In typography and plain-text contexts, it can also be used to visually set off content with a more technical or formal feel than standard < and >. Because different fonts may render angle brackets slightly differently, it’s helpful to copy the exact character from here when you need consistent results.
Common uses
- •Mathematical notation for delimiters that require double-angle brackets
- •Formal writing to visually bracket a concept or parameter with a left-only delimiter
- •Technical documentation where angle-bracket pairs denote structured expressions
- •UI/UX labeling for tokens, commands, or template placeholders in developer tools
- •Typesetting content in math-heavy editors and markup systems that support Unicode symbols
Examples
⟪ Mathematical left double angle bracket
- ⟪⟪x, y⟫
- ⟪Let ⟪A⟫ represent the transformed set.
- ⟪Define ⟪n⟫ as the encoded value.
- ⟪Output: ⟪result⟫ to the console.
- ⟪The expression is given by ⟪input⟫.
Variations
Ready to copy
Technical codes
| Unicode | U+27EA | |
| HTML Entity | ⟪ | |
| HTML Code | ⟪ | |
| CSS | \27EA | |
| Alt Code | Alt + 10218 | |
| Decimal | 10218 |
How to type Mathematical Left Double Angle Bracket Symbol (⟪)
On Windows
Hold Alt and type 10218 on the numeric keypad. In Word, type 27EA then press Alt + X.
On Mac
Switch to the Unicode Hex Input keyboard, then hold Option and type 27EA. Or press Control + Command + Space and search.
On Linux
Press Control + Shift + U, type 27ea, 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 Double Angle Bracket symbol mean?
⟪ (MATHEMATICAL LEFT DOUBLE ANGLE BRACKET, U+27EA) is a bracket symbol shaped like a left-pointing “double angle” delimiter. It’s primarily used in mathematics and formal notation to mark structured text, ranges, or special operators that have matching right-side counterparts (typically ⟫). In typography and plain-text contexts, it can also be used to visually set off content with a more technical or formal feel than standard < and >. Because different fonts may render angle brackets slightly differently, it’s helpful to copy the exact character from here when you need consistent results.
What is the Unicode name of ⟪?
The Unicode name is MATHEMATICAL LEFT DOUBLE ANGLE BRACKET.
What is the Unicode code point for ⟪?
Its Unicode code point is U+27EA.
How do I copy ⟪ reliably?
Copy the character directly from this page. For code, you can also use the provided escapes such as \\u{27EA} or \\27EA.
Does ⟪ need a matching right-side symbol?
Often it’s used with a corresponding right double angle bracket (commonly ⟫) when marking a pair of delimiters.