U+1D5EF "𝗯" Mathematical Sans-Serif Bold Small B Unicode Character

U+1D5EF "𝗯" Mathematical Sans-Serif Bold Small B is part of the Mathematical Alphanumeric Symbols block, specifically designed for use in mathematical and scientific notation to distinguish variables or constants from regular text. This character represents a bold, sans-serif version of the lowercase letter B, allowing authors to clearly denote vector quantities, sets, or other specialized meanings without relying on external formatting. It belongs to a larger set of stylized Latin letters that were encoded in Unicode to support precise typographic differentiation in digital documents, particularly in fields like physics, engineering, and formal logic.

General Properties

Code Point	U+1D5EF
Version Added	3.1
Name	Mathematical Sans-Serif Bold Small B
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"b" U+0062 Latin Small Letter B

Encodings

HTML Decimal Encoding	𝗯
HTML Hex Encoding	𝗯
UTF-8 Encoding	0xF0 0x9D 0x97 0xAF
UTF-16 Encoding	0xD835 0xDDEF
UTF-32 Encoding	0x0001D5EF
C/C++/Java Escape	\ud835\uddef

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	"b" U+0062 Latin Small Letter B
NFKC Simple Casefold	"b" U+0062 Latin Small Letter B
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