U+1D6E9 "𝛩" Mathematical Italic Capital Theta Unicode Character
Unicode Version 17.0
𝛩
U+1D6E9 "𝛩" Mathematical Italic Capital Theta is a typographic variant of the Greek capital letter theta, designed specifically for use in mathematical and scientific notation to distinguish it from ordinary text. It belongs to the “Mathematical Alphanumeric Symbols” block, which provides separate italic forms of Greek letters to avoid ambiguity in equations and formulas where italicized symbols are standard. This character is distinct from the regular Greek capital theta (Θ) and is used primarily in contexts like calculus, geometry, or physics where precise symbol styling is essential for clarity in complex expressions.
General Properties
| Code Point | U+1D6E9 |
| Version Added | 3.1 |
| Name | Mathematical Italic Capital Theta |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "Θ" U+0398 Greek Capital Letter Theta |
Encodings
| HTML Decimal Encoding | 𝛩 |
| HTML Hex Encoding | 𝛩 |
| UTF-8 Encoding | 0xF0 0x9D 0x9B 0xA9 |
| UTF-16 Encoding | 0xD835 0xDEE9 |
| UTF-32 Encoding | 0x0001D6E9 |
| C/C++/Java Escape | \ud835\udee9 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Uppercase | 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 | Upper |