| Symbol Name | Not An Element Of |
| Unicode Version | 1.1 |
| Unicode | U+2209 |
| Unicode block | |
| General category | Math Symbol (Sm) |
| CSS Code | \2209 |
| Hex Code | 0x2209 |
| HTML Code | ∉ |
| LaTeX | \notin |
| Symbol | ∉ |
| URL encode (UTF-8 percent) | %E2%88%89 |
| Spoken / screen reader name | Not An Element Of |
| UTF-8 | E2 88 89 |
| UTF-16 | 2209 |
| UTF-32 | 00002209 |
1\documentclass{article}2\usepackage{pifont}3\notin 4\end{document}You can type the not an element of symbol on most modern devices with the help of following methods:
Alt + 8713 on Windows (numeric keypad with Num Lock), or insert via Character Map.
Edit → Emoji & Symbols, search "not an element of", or use Unicode Hex Input with 2209.
Ctrl + Shift + U, type 2209, 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 math symbol support.
1span.not-an-element-of::before { content: "\2209"; }1<span>∉</span>Not An Element Of symbol's representation in different programming languages can be found in the table below:
| Language | Representation |
|---|---|
| JavaScript / TypeScript | '\u2209' or String.fromCodePoint(0x2209) |
| Python | '\N{NOT AN ELEMENT OF}' or chr(8713) |
| Rust | '\u{2209}' |
| C / C++ | UTF-8 source or wchar_t with U+2209 |
| Go | string(rune(0x2209)) |
| Ruby | "\u2209" |