∁ is the Unicode character COMPLEMENT, code point U+2201 (decimal 8705) in the Mathematical Operators block, added in Unicode 1.1. In HTML write ∁, and in UTF-8 it is the 3 bytes E2 88 81.
Codes
| Where | How to write it |
|---|---|
| Code point | U+2201 |
| Decimal | 8705 |
| UTF-8 bytes | E2 88 81 |
| UTF-16 (big-endian) | 2201 |
| UTF-32 | 00002201 |
| HTML decimal | ∁ |
| HTML hex | ∁ |
| HTML named | ∁ ∁ |
| CSS | \2201 |
| JavaScript | \u2201 |
| JSON | \u2201 |
| Python | \u2201 |
| Python by name | \N{COMPLEMENT} |
| Java, C# | \u2201 |
| Rust, Swift | \u{2201} |
| Go, C, C++ | \u2201 |
| URL (percent-encoded) | %E2%88%81 |
JavaScript and JSON strings store text as UTF-16, so this character is one code unit long. Python 3 strings count code points, so its length there is 1.
Properties
| Property | Value |
|---|---|
| Name | COMPLEMENT |
| Code point | U+2201 (decimal 8705) |
| Block | Mathematical Operators (U+2200–U+22FF) |
| General category | Sm: Math symbol |
| Script | Common |
| Bidirectional class | ON: Other neutral |
| Mirrored in right-to-left text | Yes |
| First in Unicode version | 1.1 |
Nearby in Mathematical Operators
- ∀ U+2200 For All
- ∂ U+2202 Partial Differential
- ∃ U+2203 There Exists
- ∄ U+2204 There Does Not Exist
- ∅ U+2205 Empty Set
- ∆ U+2206 Increment
- ∇ U+2207 Nabla
- ∈ U+2208 Element Of
- ∉ U+2209 Not An Element Of
All 256 characters: Mathematical Operators.
Official reference
Questions people ask
- What is the HTML code for ∁?
- Use the named entity ∁, or ∁ (decimal) or ∁ (hex).
- What is the UTF-8 encoding of U+2201?
- E2 88 81 (hex), 3 bytes. In a URL it is %E2%88%81.
- How do I write U+2201 in JavaScript or Python?
- JavaScript: \u2201. Python: \u2201.
Source
Unicode Character Database 18.0.0 (Unicode License v3); HTML entity names from the WHATWG HTML Standard (CC BY 4.0). The encodings above are computed from the code point and checked against Python's encoders. How the character looks depends on your fonts.
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