U+1D657 "𝙗" Mathematical Sans-Serif Bold Italic Small B Unicode Character

U+1D657 "𝙗" Mathematical Sans-Serif Bold Italic Small B is a stylized glyph from the Mathematical Alphanumeric Symbols block, designed for use in mathematical and scientific notation to represent a variable or constant in a sans-serif, bold, and italic typeface. It allows writers to clearly distinguish the letter “b” from other characters or formats in complex equations, ensuring that its role as a mathematical symbol is visually explicit. This character is not a standard Latin letter but a specialized typographic variant, encoded for compatibility and precision in digital texts, particularly in fields like algebra, physics, and computer science.

General Properties

Code Point	U+1D657
Version Added	3.1
Name	Mathematical Sans-Serif Bold Italic 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 0x99 0x97
UTF-16 Encoding	0xD835 0xDE57
UTF-32 Encoding	0x0001D657
C/C++/Java Escape	\ud835\ude57

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