U+1D625 "𝘥" Mathematical Sans-Serif Italic Small D Unicode Character

Unicode Version 17.0

𝘥

U+1D625 "𝘥" Mathematical Sans-Serif Italic Small D is a stylized typographic glyph that belongs to the Mathematical Alphanumeric Symbols block, specifically designed for use in mathematical and scientific notation to represent variables, constants, or functions in a sans-serif italic typeface. It allows authors to distinguish the letter 'd' from its ordinary typographic forms, which is especially useful in fields like calculus or linear algebra where 'd' commonly denotes a derivative or a differential. This character is part of a larger set of mathematical alphabets that provide distinct visual styles, such as bold, italic, and double struck, to help clarify meaning in complex equations without relying on formatting commands. Its inclusion in the Unicode standard ensures consistent representation across different platforms and software, supporting precise communication in academic and technical writing.

General Properties

Code Point U+1D625
Version Added 3.1
Name Mathematical Sans-Serif 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 0x98 0xA5
UTF-16 Encoding 0xD835 0xDE25
UTF-32 Encoding 0x0001D625
C/C++/Java Escape \ud835\ude25

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