U+1D589 "𝖉" Mathematical Bold Fraktur Small D Unicode Character

Unicode Version 17.0

𝖉

U+1D589 "𝖉" Mathematical Bold Fraktur Small D is a typographic symbol from the mathematical alphanumeric symbols block, designed specifically for use in mathematical notation rather than standard text. It represents the lowercase letter "d" in a bold Fraktur style, a blackletter typeface that originated in medieval German manuscripts and is often employed in mathematics to denote elements of a set, variables in number theory, or Lie algebra elements. This character is one of many in Unicode that allow mathematicians to differentiate between various symbolic meanings without changing the underlying letter shape. Because it is a dedicated mathematical symbol, its appearance is distinct from regular bold or italic letters and is intended to be displayed consistently across different digital platforms.

General Properties

Code Point U+1D589
Version Added 3.1
Name Mathematical Bold Fraktur 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 0x96 0x89
UTF-16 Encoding 0xD835 0xDD89
UTF-32 Encoding 0x0001D589
C/C++/Java Escape \ud835\udd89

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