Not Sign Unicode Character
U+00AC · 1 code point
¬ is the Unicode character named NOT SIGN.
Key facts for ¬
- Structure1 ordered code point
- UTF-8 size2 bytes
- Leading classMathematical Symbol (
Sm)
Unicode data for ¬
- Character
- ¬
- Code point
U+00AC- Formal name
- NOT SIGN
- General category
Sm- UTF-8 bytes
C2 AC- HTML hexadecimal
¬- Bidirectional class
ON- Combining class
0
What the classification says
The leading value belongs to the mathematical symbol class, recorded as Sm. This property helps software treat the text correctly. It does not decide the character's meaning in every setting.
How text software may read it
- Text direction: its bidirectional property marks it as a directionally neutral value.
- Display width: Unicode classifies the leading value as normally narrow in East Asian layout.
- Combining order: its canonical combining class is zero, so it carries no non-zero canonical reordering weight.
Where the encoded value sits
U+00AC has decimal scalar value 172. Its assigned plane is the Basic Multilingual Plane.
One code point, one record
This page describes one scalar value: U+00AC. Its decimal value is 172, and its UTF-8 form uses 2 bytes.
Transformation behavior for ¬
Normalization result
Applying NFC, NFD, NFKC, or NFKD preserves this exact encoded value: U+00AC. Normalization does not create a simpler or compatibility-equivalent sequence for this record.
| Form | Rendered result | Code points | Compared with input |
|---|---|---|---|
| NFC | ¬ | U+00AC | Unchanged |
| NFD | ¬ | U+00AC | Unchanged |
| NFKC | ¬ | U+00AC | Unchanged |
| NFKD | ¬ | U+00AC | Unchanged |
Mirroring behavior
The leading code point's Unicode mirrored property is No. The Unicode database does not mark this value for glyph mirroring in bidirectional layout.
Using the exact value
Copy and source representation
Copy the complete character, then verify the stored result inside its intended destination. The copy-and-paste guide explains how to check multi-part values. In UTF-8 source, the literal value can usually be used directly; its hexadecimal HTML reference is ¬. The code point converter provides language-specific escape forms.
This record belongs to the site's Technical & Code Symbols collection. Its collection-specific guidance is: Never substitute a similar-looking character in source code. Programming languages typically require ASCII operators unless their grammar explicitly allows Unicode.
Meaning and rendering boundary
Treat the formal name as an identity label, not a universal interpretation. Use the meaning-research method for cultural or technical context. Fonts control the glyph; if it becomes a box, follow the font-coverage diagnostic.