U+1D773 "𝝳" Mathematical Sans-Serif Bold Small Delta Unicode Character

U+1D773 "𝝳" Mathematical Sans-Serif Bold Small Delta is a specialized typographic glyph representing the lowercase Greek letter delta in a bold, sans-serif typeface. This character belongs to the Mathematical Alphanumeric Symbols block, which was designed to provide distinct letter variants for use in mathematical and scientific notation, particularly in contexts where a bold, non-serif style is needed to differentiate variables, constants, or operators from surrounding text. It allows writers and typesetters to clearly denote quantities such as change, difference, or the Dirac delta function without relying on font formatting or style changes, ensuring consistent rendering across different platforms and software.

General Properties

Code Point	U+1D773
Version Added	3.1
Name	Mathematical Sans-Serif Bold Small Delta
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"δ" U+03B4 Greek Small Letter Delta

Encodings

HTML Decimal Encoding	𝝳
HTML Hex Encoding	𝝳
UTF-8 Encoding	0xF0 0x9D 0x9D 0xB3
UTF-16 Encoding	0xD835 0xDF73
UTF-32 Encoding	0x0001D773
C/C++/Java Escape	\ud835\udf73

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	"δ" U+03B4 Greek Small Letter Delta
NFKC Simple Casefold	"δ" U+03B4 Greek Small Letter Delta
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