U+1D485 "𝒅" Mathematical Bold Italic Small D Unicode Character
Unicode Version 17.0
𝒅
U+1D485 "𝒅" Mathematical Bold Italic Small D is a typographic symbol from the Mathematical Alphanumeric Symbols block, designed to represent a bold italic lowercase "d" for use in mathematical and scientific notation. It allows authors to visually distinguish variables, such as a differential or a specific parameter, from plain Latin text, ensuring clarity in complex equations and formulas. This character is part of a comprehensive set of styled alphabetic characters that support a wide range of mathematical disciplines, from algebra to physics, by providing a standardized way to denote vectors, tensors, or other specialized quantities.
General Properties
| Code Point | U+1D485 |
| Version Added | 3.1 |
| Name | Mathematical Bold Italic Small D |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "d" U+0064 Latin Small Letter D |
Encodings
| HTML Decimal Encoding | 𝒅 |
| HTML Hex Encoding | 𝒅 |
| UTF-8 Encoding | 0xF0 0x9D 0x92 0x85 |
| UTF-16 Encoding | 0xD835 0xDC85 |
| UTF-32 Encoding | 0x0001D485 |
| C/C++/Java Escape | \ud835\udc85 |
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 | "d" U+0064 Latin Small Letter D |
| NFKC Simple Casefold | "d" U+0064 Latin Small Letter D |
| 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 |