U+1D448 "𝑈" Mathematical Italic Capital U Unicode Character

U+1D448 "𝑈" Mathematical Italic Capital U is a stylized version of the Latin capital letter U, designed specifically for mathematical and scientific typesetting to distinguish variables from regular text. It is part of the Mathematical Alphanumeric Symbols block, which provides a full range of italic, bold, script, and other letter forms to represent mathematical objects, such as vectors, sets, or generic unknown quantities. This character ensures clarity in formulas by preventing confusion with the standard upright "U" used in prose, and it is commonly employed in disciplines like physics, engineering, and higher mathematics for denoting energy, potential, or unitary transformations.

General Properties

Code Point	U+1D448
Version Added	3.1
Name	Mathematical Italic Capital U
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"U" U+0055 Latin Capital Letter U

Encodings

HTML Decimal Encoding	𝑈
HTML Hex Encoding	𝑈
UTF-8 Encoding	0xF0 0x9D 0x91 0x88
UTF-16 Encoding	0xD835 0xDC48
UTF-32 Encoding	0x0001D448
C/C++/Java Escape	\ud835\udc48

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	"u" U+0075 Latin Small Letter U
NFKC Simple Casefold	"u" U+0075 Latin Small Letter U
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