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There Does Not Exist HTML entity ∄
∄ is the HTML entity for There Does Not Exist ∄ (U+2204). Copy ∄, ∄ and the CSS, JavaScript, Python and URL escapes.
- Entity
∄- Also written
∄∄- Code point
- U+2204
- Unicode name
- THERE DOES NOT EXIST
- Block
- Mathematical Operators
- Category
- Math symbol (Sm)
- Since
- Unicode 1.1
- Defined in
- HTML5
Codes to copy
| HTML named | ∄Works in HTML; in XML only & < > " ' are predefined. | |
|---|---|---|
| HTML decimal | ∄Works in HTML and XML. | |
| HTML hex | ∄Works in HTML and XML. | |
| CSS | content: "\2204";In a stylesheet, for ::before and ::after. | |
| JavaScript | "\u2204"Also valid in JSON. | |
| Python | "\u2204"Python 3 string literal. | |
| Python by name | "\N{THERE DOES NOT EXIST}"Readable alternative using the Unicode name. | |
| URL | %E2%88%84Percent-encoded UTF-8 bytes, for a path or query value. | |
| UTF-8 bytes | E2 88 843 bytes. | |
| UTF-16 | 22041 code unit, which is what JavaScript length counts. |
When to use it
∄ writes U+2204 (There Does Not Exist), a maths symbol from the Unicode Mathematical Operators block, encoded since Unicode 1.1. For more than a symbol or two, MathML, supported in all major browsers since 2023, gives proper maths spacing and layout.
The name comes from the HTML5 list (much of it shared with MathML), so it works in every current browser but not in XML or XHTML served as XML, where the numeric reference is the safe choice.
More maths operators
∇Nabla∂Partial Differential∈Element Of∁Complement∉Not An Element of∀For All∋Contains As Member℘Script Capital P
All maths operators · Every HTML entity · Encode or decode text
Source: the WHATWG HTML Standard list of named character references and the Unicode Character Database (Unicode 18.0).