U+1D5DC "𝗜" Mathematical Sans-Serif Bold Capital I Unicode Character

U+1D5DC "𝗜" Mathematical Sans-Serif Bold Capital I is a typographic symbol belonging to the Mathematical Alphanumeric Symbols block, designed specifically for use in mathematical and scientific notation where a sans-serif bold capital I is required to distinguish it from ordinary text. It represents the letter I in a style that is both without serifs (sans-serif) and thickened with a bold weight, often employed to denote vectors, matrices, identity elements, or other mathematical objects in formal writing. This character is not typically used in standard prose but rather in specialized contexts such as equations, technical documents, or digital typesetting where precise formatting and semantic clarity are needed.

General Properties

Code Point	U+1D5DC
Version Added	3.1
Name	Mathematical Sans-Serif Bold Capital I
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"I" U+0049 Latin Capital Letter I

Encodings

HTML Decimal Encoding	𝗜
HTML Hex Encoding	𝗜
UTF-8 Encoding	0xF0 0x9D 0x97 0x9C
UTF-16 Encoding	0xD835 0xDDDC
UTF-32 Encoding	0x0001D5DC
C/C++/Java Escape	\ud835\udddc

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	"i" U+0069 Latin Small Letter I
NFKC Simple Casefold	"i" U+0069 Latin Small Letter I
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