U+1D49F "𝒟" Mathematical Script Capital D Unicode Character

U+1D49F "𝒟" Mathematical Script Capital D is a typographic symbol used primarily in mathematical and scientific notation, distinct from the basic Latin letter D. It belongs to the Mathematical Alphanumeric Symbols block, which provides stylized letter forms for precise differentiation in equations, particularly useful in fields like linear algebra or physics where script letters denote specific operators, sets, or variables. This character is rendered in a decorative cursive style, often employed to represent concepts such as a differential operator, a domain, or a designated vector space, ensuring clarity when standard Roman letters might cause ambiguity.

General Properties

Code Point	U+1D49F
Version Added	3.1
Name	Mathematical Script 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 0x92 0x9F
UTF-16 Encoding	0xD835 0xDC9F
UTF-32 Encoding	0x0001D49F
C/C++/Java Escape	\ud835\udc9f

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