U+1D5D7 "𝗗" Mathematical Sans-Serif Bold Capital D Unicode Character

U+1D5D7 "𝗗" Mathematical Sans-Serif Bold Capital D is a typographic variant of the Latin capital letter D, designed to be used in mathematical and scientific notation where a bold, sans-serif appearance is needed to distinguish variables, constants, or symbolic expressions from standard text. It belongs to the Mathematical Alphanumeric Symbols block, which was added to Unicode to provide clear, unambiguous representations for mathematical formulas in digital environments that lack dedicated formatting or font support. This character is particularly useful in contexts such as vector notation, matrix element naming, or indicating sets and dimensions, ensuring consistent rendering across different platforms and applications.

General Properties

Code Point	U+1D5D7
Version Added	3.1
Name	Mathematical Sans-Serif Bold Capital D
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"D" U+0044 Latin Capital Letter D

Encodings

HTML Decimal Encoding	𝗗
HTML Hex Encoding	𝗗
UTF-8 Encoding	0xF0 0x9D 0x97 0x97
UTF-16 Encoding	0xD835 0xDDD7
UTF-32 Encoding	0x0001D5D7
C/C++/Java Escape	\ud835\uddd7

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Uppercase	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	Upper