| Symbol Name | Mathematical Left Double Angle Bracket |
| Unicode Version | 3.2 |
| Unicode | U+27EA |
| Unicode block | |
| General category | Open Punctuation (Ps) |
| UTF-8 | E2 9F AA |
| UTF-16 | 27EA |
| UTF-32 | 000027EA |
1\documentclass{article}2\usepackage{pifont}3\text{MATHEMATICALLEFTDOUBLEANGLEBRACKET}4\end{document}You can type the mathematical left double angle bracket symbol on most modern devices with the help of following methods:
Alt + 10218 on Windows (numeric keypad with Num Lock), or insert via Character Map.
Edit → Emoji & Symbols, search "mathematical left double angle bracket", or use Unicode Hex Input with 27EA.
Ctrl + Shift + U, type 27ea, then Enter (layout-dependent).
Paste from this page, use text replacement, or pick from the symbol keyboard.
Paste from this page or use a keyboard with bracket and quote support.
1span.mathematical-left-double-angle-bracket::before { content: "\27EA"; }1<span>⟪</span>Mathematical Left Double Angle Bracket symbol's representation in different programming languages can be found in the table below:
| Language | Representation |
|---|---|
| JavaScript / TypeScript | '\u27EA' or String.fromCodePoint(10218) |
| Python | '\N{MATHEMATICAL LEFT DOUBLE ANGLE BRACKET}' or chr(10218) |
| Rust | '\u{27EA}' |
| C / C++ | UTF-8 source or wchar_t with U+27EA |
| Go | string(rune(0x27EA)) |
| Ruby | "\u{27EA}" |
| CSS Code |
\27EA |
| Hex Code | 0x27EA |
| HTML Code | ⟪ |
| LaTeX | \text{MATHEMATICALLEFTDOUBLEANGLEBRACKET} |
| Symbol | ⟪ |
| URL encode (UTF-8 percent) | %E2%9F%AA |
| Spoken / screen reader name | Mathematical Left Double Angle Bracket |