U+1D4B9 "𝒹" Mathematical Script Small D Unicode Character

Unicode Version 17.0

𝒹

U+1D4B9 "𝒹" Mathematical Script Small D is a glyph from the Mathematical Alphanumeric Symbols block, designed for use in mathematical and scientific notation to represent a variable, constant, or function in a script typeface distinct from standard italic or roman letters. It belongs to a set of calligraphic or script style characters that help differentiate symbols in complex equations, such as those found in calculus, physics, or linear algebra, where a handwritten aesthetic is desired. This specific character is the lowercase version of the letter D in a formal script style, and it is typically rendered with a looped or flowing design. Its inclusion in the Unicode standard ensures that it can be consistently represented across different digital platforms and applications without relying on specific fonts or formatting tricks.

General Properties

Code Point U+1D4B9
Version Added 3.1
Name Mathematical Script 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 0xB9
UTF-16 Encoding 0xD835 0xDCB9
UTF-32 Encoding 0x0001D4B9
C/C++/Java Escape \ud835\udcb9

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