U+1D425 "𝐥" Mathematical Bold Small L Unicode Character

U+1D425 "𝐥" Mathematical Bold Small L is a typographic glyph representing the lowercase letter "l" in a bold, sans-serif style, specifically designed for mathematical and scientific notation. It belongs to the Mathematical Alphanumeric Symbols block, which provides distinct letterforms to avoid confusion with regular text or to denote specific variables, vectors, or constants in formulas. Unlike the standard bold "l" produced by simple font styling, this character is a dedicated code point, ensuring consistent rendering across different systems and software. Its primary use is in mathematical expressions, such as representing a vector or a line, where precise typographic distinction is necessary for clarity.

General Properties

Code Point	U+1D425
Version Added	3.1
Name	Mathematical Bold Small L
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"l" U+006C Latin Small Letter L

Encodings

HTML Decimal Encoding	𝐥
HTML Hex Encoding	𝐥
UTF-8 Encoding	0xF0 0x9D 0x90 0xA5
UTF-16 Encoding	0xD835 0xDC25
UTF-32 Encoding	0x0001D425
C/C++/Java Escape	\ud835\udc25

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	"l" U+006C Latin Small Letter L
NFKC Simple Casefold	"l" U+006C Latin Small Letter L
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