U+03B6 "ζ" Greek Small Letter Zeta Unicode Character

U+03B6 "ζ" Greek Small Letter Zeta is the sixth letter of the Greek alphabet and represents the voiced alveolar fricative sound /z/ in Modern Greek, while in Ancient Greek it denoted the double consonant /zd/ or /dz/. It serves as the symbol for the Riemann zeta function in mathematics, a critical tool in number theory and analytic geometry, and is also used in physics to denote the damping ratio in mechanical and electrical systems. Derived from the Phoenician letter zayin, zeta is one of the earliest Greek letters with a linear form, and its lowercase shape has remained relatively stable in typography across centuries.

General Properties

Code Point	U+03B6
Version Added	1.1
Name	Greek Small Letter Zeta
Block	Greek and Coptic
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	ζ
HTML Hex Encoding	ζ
UTF-8 Encoding	0xCE 0xB6
UTF-16 Encoding	0x03B6
UTF-32 Encoding	0x000003B6
C/C++/Java Escape	\u03b6

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
East Asian Width	Ambiguous
Lowercase	Yes
Simple Uppercase Code Point	"Ζ" U+0396 Greek Capital Letter Zeta
Simple Titlecase Code Point	"Ζ" U+0396 Greek Capital Letter Zeta
Uppercase Code Point	"Ζ" U+0396 Greek Capital Letter Zeta
Titlecase Code Point	"Ζ" U+0396 Greek Capital Letter Zeta
Cased	Yes
Changes When Casemapped	Yes
Changes When Titlecased	Yes
Changes When Uppercased	Yes
Script	Greek
Script Extensions	Greek
Indic Syllabic Category	Other
ID Start	Yes
XID Start	Yes
ID Continue	Yes
XID Continue	Yes
Alphabetic	Yes
Vertical Orientation	Rotated
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Alphabetic letter
Sentence Break	Lower