U+1D709 "𝜉" Mathematical Italic Small Xi Unicode Character
Unicode Version 17.0
𝜉
U+1D709 "𝜉" Mathematical Italic Small Xi is a typographical variant of the Greek letter xi, specifically designed for use in mathematical and scientific notation to distinguish it from standard text. It belongs to the Mathematical Alphanumeric Symbols block and is primarily employed as a variable or symbol in fields such as mathematics, physics, and engineering, often representing angles, coordinates, or statistical coefficients. This italic form aligns with the convention of using slanted letters for variables, ensuring clarity and consistency in technical documents.
General Properties
| Code Point | U+1D709 |
| Version Added | 3.1 |
| Name | Mathematical Italic Small Xi |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "ξ" U+03BE Greek Small Letter Xi |
Encodings
| HTML Decimal Encoding | 𝜉 |
| HTML Hex Encoding | 𝜉 |
| UTF-8 Encoding | 0xF0 0x9D 0x9C 0x89 |
| UTF-16 Encoding | 0xD835 0xDF09 |
| UTF-32 Encoding | 0x0001D709 |
| C/C++/Java Escape | \ud835\udf09 |
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 | "ξ" U+03BE Greek Small Letter Xi |
| NFKC Simple Casefold | "ξ" U+03BE Greek Small Letter Xi |
| 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 |