⊀ is the Unicode character DOES NOT PRECEDE, code point U+2280 (decimal 8832) in the Mathematical Operators block, added in Unicode 1.1. In HTML write ⊀, and in UTF-8 it is the 3 bytes E2 8A 80.
Codes
| Where | How to write it |
|---|---|
| Code point | U+2280 |
| Decimal | 8832 |
| UTF-8 bytes | E2 8A 80 |
| UTF-16 (big-endian) | 2280 |
| UTF-32 | 00002280 |
| HTML decimal | ⊀ |
| HTML hex | ⊀ |
| HTML named | ⊀ ⊀ ⊀ |
| CSS | \2280 |
| JavaScript | \u2280 |
| JSON | \u2280 |
| Python | \u2280 |
| Python by name | \N{DOES NOT PRECEDE} |
| Java, C# | \u2280 |
| Rust, Swift | \u{2280} |
| Go, C, C++ | \u2280 |
| URL (percent-encoded) | %E2%8A%80 |
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 | DOES NOT PRECEDE |
| Code point | U+2280 (decimal 8832) |
| 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 |
Decomposition
DOES NOT PRECEDE is canonically equivalent to the sequence below. Normalising text to NFD splits it into these parts; NFC joins them back into U+2280. Search and comparison should normalise first, or the two spellings will not match.
Nearby in Mathematical Operators
- ≸ U+2278 Neither Less-Than Nor Greater-Than
- ≹ U+2279 Neither Greater-Than Nor Less-Than
- ≺ U+227A Precedes
- ≻ U+227B Succeeds
- ≼ U+227C Precedes Or Equal To
- ≽ U+227D Succeeds Or Equal To
- ≾ U+227E Precedes Or Equivalent To
- ≿ U+227F Succeeds Or Equivalent To
- ⊁ U+2281 Does Not Succeed
- ⊂ U+2282 Subset Of
- ⊃ U+2283 Superset Of
- ⊄ U+2284 Not A Subset Of
- ⊅ U+2285 Not A Superset Of
- ⊆ U+2286 Subset Of Or Equal To
- ⊇ U+2287 Superset Of Or Equal To
- ⊈ U+2288 Neither A Subset Of Nor Equal To
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+2280?
- E2 8A 80 (hex), 3 bytes. In a URL it is %E2%8A%80.
- How do I write U+2280 in JavaScript or Python?
- JavaScript: \u2280. Python: \u2280.
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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