U+1D5A9 "𝖩" Mathematical Sans-Serif Capital J Unicode Character

U+1D5A9 "𝖩" Mathematical Sans-Serif Capital J is part of the Mathematical Alphanumeric Symbols block, designed for use in technical and scientific notation where a distinct, clean sans-serif letterform is needed. It represents the uppercase letter J in a sans-serif typeface, often employed in mathematics, physics, or formal writing to denote variables, constants, or set elements while avoiding style conflicts with standard italic or serif fonts. This character is typically rendered with a simple, modern shape that omits the decorative strokes found in serif fonts, and its inclusion in Unicode ensures precise, consistent representation across digital platforms and publications.

General Properties

Code Point	U+1D5A9
Version Added	3.1
Name	Mathematical Sans-Serif Capital J
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"J" U+004A Latin Capital Letter J

Encodings

HTML Decimal Encoding	𝖩
HTML Hex Encoding	𝖩
UTF-8 Encoding	0xF0 0x9D 0x96 0xA9
UTF-16 Encoding	0xD835 0xDDA9
UTF-32 Encoding	0x0001D5A9
C/C++/Java Escape	\ud835\udda9

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	"j" U+006A Latin Small Letter J
NFKC Simple Casefold	"j" U+006A Latin Small Letter J
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