U+1D480 "𝒀" Mathematical Bold Italic Capital Y Unicode Character

U+1D480 "𝒀" Mathematical Bold Italic Capital Y is a typographic variant of the Latin letter Y, designed for use in mathematical and scientific notation where a bold italic style is required to denote a specific variable, vector, or matrix. It belongs to the Mathematical Alphanumeric Symbols block, which was introduced to provide distinct, semantically meaningful glyphs that avoid confusion with ordinary text characters in complex equations. This character is not intended for general prose but rather for technical documents, ensuring clarity in contexts where a standard uppercase Y might be ambiguous. Its design combines a bold weight with an italic slant, making it visually distinct from both plain and script versions of the letter.

General Properties

Code Point	U+1D480
Version Added	3.1
Name	Mathematical Bold Italic Capital Y
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"Y" U+0059 Latin Capital Letter Y

Encodings

HTML Decimal Encoding	𝒀
HTML Hex Encoding	𝒀
UTF-8 Encoding	0xF0 0x9D 0x92 0x80
UTF-16 Encoding	0xD835 0xDC80
UTF-32 Encoding	0x0001D480
C/C++/Java Escape	\ud835\udc80

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	"y" U+0079 Latin Small Letter Y
NFKC Simple Casefold	"y" U+0079 Latin Small Letter Y
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