U+1D5BD "𝖽" Mathematical Sans-Serif Small D Unicode Character

U+1D5BD "𝖽" Mathematical Sans-Serif Small D is a typographic symbol belonging to the Mathematical Alphanumeric Symbols block, intended for use in mathematical and scientific notation where a sans-serif style is desired to distinguish variables from ordinary text. It represents the lowercase letter d in a bold sans-serif typeface, allowing it to be clearly identified as a mathematical entity rather than a plain alphabetic character. This character helps ensure precise communication in formulas and equations, particularly in fields like physics, engineering, and computer science where specific typographic conventions aid readability and prevent ambiguity.

General Properties

Code Point	U+1D5BD
Version Added	3.1
Name	Mathematical Sans-Serif 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 0xBD
UTF-16 Encoding	0xD835 0xDDBD
UTF-32 Encoding	0x0001D5BD
C/C++/Java Escape	\ud835\uddbd

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