U+1D402 "𝐂" Mathematical Bold Capital C Unicode Character

U+1D402 "𝐂" Mathematical Bold Capital C is a typographic symbol specifically designed for use in mathematical and scientific notation, representing the capital letter C in a bold typeface distinct from standard text. It belongs to the Unicode block called Mathematical Alphanumeric Symbols, which was introduced to provide precise, unambiguous characters for formulas, variables, and constants, preventing confusion with regular letters in plain text. This particular character is often employed to denote sets, such as the set of complex numbers, or other mathematical objects where a bold style indicates a special meaning, and it can be displayed in digital documents and web pages that support Unicode encoding.

General Properties

Code Point	U+1D402
Version Added	3.1
Name	Mathematical Bold Capital C
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"C" U+0043 Latin Capital Letter C

Encodings

HTML Decimal Encoding	𝐂
HTML Hex Encoding	𝐂
UTF-8 Encoding	0xF0 0x9D 0x90 0x82
UTF-16 Encoding	0xD835 0xDC02
UTF-32 Encoding	0x0001D402
C/C++/Java Escape	\ud835\udc02

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	"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	Upper