U+1D6C9 "𝛉" Mathematical Bold Small Theta Unicode Character
Unicode Version 17.0
𝛉
U+1D6C9 "𝛉" Mathematical Bold Small Theta is a glyph used in mathematical notation to represent the Greek letter theta in a bold, small form, belonging to the Mathematical Alphanumeric Symbols block. It is primarily employed in scientific and technical fields, such as mathematics, physics, and engineering, to denote angles, phases, or temperature variables in a style that distinguishes it from ordinary text or italicized symbols. This character helps maintain clarity and consistency in complex equations, allowing writers to specify a bold weight for emphasis or to align with specific typographic conventions in academic publishing.
General Properties
| Code Point | U+1D6C9 |
| Version Added | 3.1 |
| Name | Mathematical Bold Small Theta |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "θ" U+03B8 Greek Small Letter Theta |
Encodings
| HTML Decimal Encoding | 𝛉 |
| HTML Hex Encoding | 𝛉 |
| UTF-8 Encoding | 0xF0 0x9D 0x9B 0x89 |
| UTF-16 Encoding | 0xD835 0xDEC9 |
| UTF-32 Encoding | 0x0001D6C9 |
| C/C++/Java Escape | \ud835\udec9 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Lowercase | Yes |
| Cased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "θ" U+03B8 Greek Small Letter Theta |
| NFKC Simple Casefold | "θ" U+03B8 Greek Small Letter Theta |
| Script | Common |
| Script Extensions | Common |
| Indic Syllabic Category | Other |
| ID Start | Yes |
| XID Start | Yes |
| ID Continue | Yes |
| XID Continue | Yes |
| Alphabetic | Yes |
| Math | Yes |
| Other Math | Yes |
| Vertical Orientation | Rotated |
| Grapheme Base | Yes |
| Grapheme Cluster Break | Other |
| Word Break | Alphabetic letter |
| Sentence Break | Lower |