U+1D719 "𝜙" Mathematical Italic Phi Symbol Unicode Character
Unicode Version 17.0
𝜙
U+1D719 "𝜙" Mathematical Italic Phi Symbol is a typographic glyph representing the Greek letter phi in an italic style, designed specifically for use in mathematical and scientific notation rather than in standard Greek text. It belongs to the Mathematical Alphanumeric Symbols block, which provides distinct characters for letters in various styles to avoid ambiguity when mixing variables, constants, and operators in formal equations. This italic phi is commonly employed to denote angles, wave functions, the golden ratio, or the Euler totient function in contexts where a differentiated, slanted typeface is preferred over the upright Greek phi.
General Properties
| Code Point | U+1D719 |
| Version Added | 3.1 |
| Name | Mathematical Italic Phi Symbol |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "ϕ" U+03D5 Greek Phi Symbol |
Encodings
| HTML Decimal Encoding | 𝜙 |
| HTML Hex Encoding | 𝜙 |
| UTF-8 Encoding | 0xF0 0x9D 0x9C 0x99 |
| UTF-16 Encoding | 0xD835 0xDF19 |
| UTF-32 Encoding | 0x0001D719 |
| C/C++/Java Escape | \ud835\udf19 |
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 | "φ" U+03C6 Greek Small Letter Phi |
| NFKC Simple Casefold | "φ" U+03C6 Greek Small Letter Phi |
| 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 |