U+1D543 "𝕃" Mathematical Double-Struck Capital L Unicode Character

U+1D543 "𝕃" Mathematical Double-Struck Capital L is a typographic glyph belonging to the Mathematical Alphanumeric Symbols block, designed to represent the letter L in a double struck or blackboard bold style, which is commonly used in mathematics to denote special sets or algebraic structures such as the Lebesgue space or the ring of Lipschitz functions. Its visual appearance features vertical strokes drawn with a double outline, mimicking the chalkboard shorthand used in academic notation. This character is distinct from the regular Latin capital L, allowing precise typesetting in mathematical documents, especially in fields like analysis and number theory.

General Properties

Code Point	U+1D543
Version Added	3.1
Name	Mathematical Double-Struck Capital L
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"L" U+004C Latin Capital Letter L

Encodings

HTML Decimal Encoding	𝕃
HTML Hex Encoding	𝕃
UTF-8 Encoding	0xF0 0x9D 0x95 0x83
UTF-16 Encoding	0xD835 0xDD43
UTF-32 Encoding	0x0001D543
C/C++/Java Escape	\ud835\udd43

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Uppercase	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	Upper