U+22A1 "⊡" Squared Dot Operator Unicode Character
Unicode Version 17.0
⊡
U+22A1 "⊡" Squared Dot Operator is a mathematical symbol that represents a small dot enclosed within a square, typically used in various branches of mathematics and logic to denote a binary operation, such as a generalized multiplication or a specific operator in group theory and linear algebra. It is part of the Mathematical Operators block in Unicode, and its semantic function can vary depending on the context, including signifying the direct product of two algebraic structures or a placeholder for a defined operation in formal notations. The glyph resembles a square with a centered dot, distinct from related symbols like the logical "square" operators or the dotted circle, and is encoded for use in technical and mathematical text.
General Properties
| Code Point | U+22A1 |
| Version Added | 1.1 |
| Name | Squared Dot Operator |
| Block | Mathematical Operators |
| General Category | Math Symbol |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Other Neutral |
Encodings
| HTML Decimal Encoding | ⊡ |
| HTML Hex Encoding | ⊡ |
| UTF-8 Encoding | 0xE2 0x8A 0xA1 |
| UTF-16 Encoding | 0x22A1 |
| UTF-32 Encoding | 0x000022A1 |
| C/C++/Java Escape | \u22a1 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| NFKC Quick Check | Yes |
| NFKD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| Pattern Syntax | Yes |
| Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Other |
| Sentence Break | Other |