U+1D518 "𝔘" Mathematical Fraktur Capital U Unicode Character

U+1D518 "𝔘" Mathematical Fraktur Capital U is a typographic glyph from the Mathematical Alphanumeric Symbols block, designed to represent the capital letter U in a Fraktur or blackletter style for use in mathematical and scientific notation. It is primarily employed in fields like set theory, group theory, and logic to denote specific algebraic structures, such as a universal set or a particular mathematical object, distinguishing it from the standard Latin alphabet to avoid confusion with variables or constants. This character enables precise communication in academic texts where traditional Fraktur typefaces were historically used, but it now serves as a digital symbol accessible across Unicode-compatible systems.

General Properties

Code Point	U+1D518
Version Added	3.1
Name	Mathematical Fraktur 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 0x94 0x98
UTF-16 Encoding	0xD835 0xDD18
UTF-32 Encoding	0x0001D518
C/C++/Java Escape	\ud835\udd18

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