U+1D453 "𝑓" Mathematical Italic Small F Unicode Character
Unicode Version 17.0
𝑓
U+1D453 "𝑓" Mathematical Italic Small F is a specialized glyph designed for use in mathematical and scientific notation, distinguishing it from the standard italic "f" often used in prose. It belongs to the Mathematical Alphanumeric Symbols block, which was created to provide distinct characters that preserve their semantic role as variables or function names in digital text, preventing ambiguity with ordinary letters. This character is commonly employed to represent functions, frequencies, or generic variables in equations, allowing for precise formatting across various platforms and documents.
General Properties
| Code Point | U+1D453 |
| Version Added | 3.1 |
| Name | Mathematical Italic Small F |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "f" U+0066 Latin Small Letter F |
Encodings
| HTML Decimal Encoding | 𝑓 |
| HTML Hex Encoding | 𝑓 |
| UTF-8 Encoding | 0xF0 0x9D 0x91 0x93 |
| UTF-16 Encoding | 0xD835 0xDC53 |
| UTF-32 Encoding | 0x0001D453 |
| C/C++/Java Escape | \ud835\udc53 |
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 | "f" U+0066 Latin Small Letter F |
| NFKC Simple Casefold | "f" U+0066 Latin Small Letter F |
| 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 |