U+1D554 "𝕔" Mathematical Double-Struck Small C Unicode Character

U+1D554 "𝕔" Mathematical Double-Struck Small C is a specialized typographic glyph used primarily in mathematical notation to represent the set of complex numbers or as a variable in abstract algebra and number theory, where double-struck lettering standardizes the visual distinction for such concepts. This character belongs to the Mathematical Alphanumeric Symbols block within Unicode, encoded to support precise scientific and academic writing without relying on font formatting tricks. Its design mimics the blackboard bold style, making it easily recognizable in contexts like textbooks, research papers, and digital math displays, but it is distinct from the regular Latin letter "c" to avoid semantic ambiguity.

General Properties

Code Point	U+1D554
Version Added	3.1
Name	Mathematical Double-Struck Small C
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"c" U+0063 Latin Small Letter C

Encodings

HTML Decimal Encoding	𝕔
HTML Hex Encoding	𝕔
UTF-8 Encoding	0xF0 0x9D 0x95 0x94
UTF-16 Encoding	0xD835 0xDD54
UTF-32 Encoding	0x0001D554
C/C++/Java Escape	\ud835\udd54

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	"c" U+0063 Latin Small Letter C
NFKC Simple Casefold	"c" U+0063 Latin Small Letter C
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