U+1D6AD "𝚭" Mathematical Bold Capital Zeta Unicode Character

U+1D6AD "𝚭" Mathematical Bold Capital Zeta is a stylized, bold version of the Greek letter Zeta (Ζ) specifically encoded for use in mathematical and scientific notation, where it represents the sixth letter of the Greek alphabet in a bold typeface. This character belongs to the Mathematical Alphanumeric Symbols block, which was introduced to allow mathematicians, physicists, and engineers to clearly denote variables, constants, or special functions like the Riemann zeta function without relying on font styling or markup that may not transfer reliably across different software. Its bold weight helps distinguish it from regular text and other similar-looking characters, ensuring precision in complex formulas and digital documents.

General Properties

Code Point	U+1D6AD
Version Added	3.1
Name	Mathematical Bold Capital Zeta
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"Ζ" U+0396 Greek Capital Letter Zeta

Encodings

HTML Decimal Encoding	𝚭
HTML Hex Encoding	𝚭
UTF-8 Encoding	0xF0 0x9D 0x9A 0xAD
UTF-16 Encoding	0xD835 0xDEAD
UTF-32 Encoding	0x0001D6AD
C/C++/Java Escape	\ud835\udead

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	"ζ" U+03B6 Greek Small Letter Zeta
NFKC Simple Casefold	"ζ" U+03B6 Greek Small Letter Zeta
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