U+1D4B4 "𝒴" Mathematical Script Capital Y Unicode Character

U+1D4B4 "𝒴" Mathematical Script Capital Y is a stylized, decorative letterform designed for use in mathematical and scientific notation, specifically representing the capital letter Y in a script font style. This character belongs to the "Mathematical Alphanumeric Symbols" block in Unicode, which was created to provide distinct, unambiguous symbols for variables and constants in formal texts, preventing confusion with ordinary text or italic letters. The glyph features elegant, flowing strokes reminiscent of calligraphic handwriting, and it is commonly employed to denote various mathematical objects such as vectors, matrices, or specific functions within complex equations and proofs.

General Properties

Code Point	U+1D4B4
Version Added	3.1
Name	Mathematical Script 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 0xB4
UTF-16 Encoding	0xD835 0xDCB4
UTF-32 Encoding	0x0001D4B4
C/C++/Java Escape	\ud835\udcb4

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