U+1D432 "𝐲" Mathematical Bold Small Y Unicode Character

U+1D432 "𝐲" Mathematical Bold Small Y is a typographic glyph belonging to the Mathematical Alphanumeric Symbols block, designed for use in scientific and mathematical notation where a bold, upright lowercase "y" is required to distinguish it from standard text or to denote vectors, matrices, or other mathematical objects. It was introduced in Unicode 3.1 as part of a comprehensive set of styled Latin letters to allow clear representation in digital documents without reliance on font-specific formatting. This character specifically encodes the bold weight of the lowercase letter y, preserving its intended mathematical meaning across different platforms and software.

General Properties

Code Point	U+1D432
Version Added	3.1
Name	Mathematical Bold 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 0x90 0xB2
UTF-16 Encoding	0xD835 0xDC32
UTF-32 Encoding	0x0001D432
C/C++/Java Escape	\ud835\udc32

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