U+1D56A "𝕪" Mathematical Double-Struck Small Y Unicode Character

U+1D56A "𝕪" Mathematical Double-Struck Small Y is a typographic glyph from the Mathematical Alphanumeric Symbols block, designed to represent the letter 'y' in a double struck or blackboard bold style. This style is commonly used in mathematics, physics, and logic to denote sets of numbers, algebraic structures, or abstract variables, giving the character a distinct visual weight that sets it apart from standard italic or regular letter forms. The character is encoded for use in digital text to allow clear representation of mathematical notation without relying on specific fonts, ensuring consistent display across different platforms and applications.

General Properties

Code Point	U+1D56A
Version Added	3.1
Name	Mathematical Double-Struck Small Y
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"y" U+0079 Latin Small Letter Y

Encodings

HTML Decimal Encoding	𝕪
HTML Hex Encoding	𝕪
UTF-8 Encoding	0xF0 0x9D 0x95 0xAA
UTF-16 Encoding	0xD835 0xDD6A
UTF-32 Encoding	0x0001D56A
C/C++/Java Escape	\ud835\udd6a

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Lowercase	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	Lower