U+1D6DD "𝛝" Mathematical Bold Theta Symbol Unicode Character
Unicode Version 17.0
𝛝
U+1D6DD "𝛝" Mathematical Bold Theta Symbol is part of the Mathematical Alphanumeric Symbols block, designed for use in scientific and mathematical notation where a bold style is required to distinguish variables or constants. It represents the Greek letter theta in a bold typeface, often used in fields like physics, engineering, and mathematics to denote angles, phase shifts, or specific functional parameters. This character allows authors to maintain typographic consistency in digital documents, enabling clear differentiation from regular text or other symbols in complex equations.
General Properties
| Code Point | U+1D6DD |
| Version Added | 3.1 |
| Name | Mathematical Bold Theta Symbol |
| 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+03D1 Greek Theta Symbol |
Encodings
| HTML Decimal Encoding | 𝛝 |
| HTML Hex Encoding | 𝛝 |
| UTF-8 Encoding | 0xF0 0x9D 0x9B 0x9D |
| UTF-16 Encoding | 0xD835 0xDEDD |
| UTF-32 Encoding | 0x0001D6DD |
| C/C++/Java Escape | \ud835\udedd |
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 |