U+2110 "ℐ" Script Capital I Unicode Character

U+2110 "ℐ" Script Capital I is a typographic symbol representing a stylized, cursive uppercase letter I, often used in mathematical notation to denote an identity matrix, an integral operator, or other specific quantities in fields such as linear algebra, physics, and engineering. It belongs to the Letterlike Symbols block, which includes characters designed to resemble letters but serve specialized roles in technical and scientific texts. This character is distinct from the ordinary Latin capital I or the mathematical italic I, providing a clear visual differentiation in formal documents and academic works.

General Properties

Code Point	U+2110
Version Added	1.1
Name	Script Capital I
Unicode 1.0 Name	Script I
Block	Letterlike 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	0xE2 0x84 0x90
UTF-16 Encoding	0x2110
UTF-32 Encoding	0x00002110
C/C++/Java Escape	\u2110

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