U+1D6EF "𝛯" Mathematical Italic Capital Xi Unicode Character

U+1D6EF "𝛯" Mathematical Italic Capital Xi is a typographic variant of the Greek capital letter Xi, specifically styled in a mathematical italic font for use in scientific and mathematical notation. This character belongs to the "Mathematical Alphanumeric Symbols" block, where distinct letter forms are encoded to prevent ambiguity between ordinary Greek text and variables or constants in equations. Its primary purpose is to represent the capital Xi symbol in mathematical contexts, such as denoting the Riemann Xi function in number theory or the grand canonical partition function in statistical mechanics, ensuring precise semantic meaning in digital documents and academic publishing.

General Properties

Code Point	U+1D6EF
Version Added	3.1
Name	Mathematical Italic Capital Xi
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"Ξ" U+039E Greek Capital Letter Xi

Encodings

HTML Decimal Encoding	𝛯
HTML Hex Encoding	𝛯
UTF-8 Encoding	0xF0 0x9D 0x9B 0xAF
UTF-16 Encoding	0xD835 0xDEEF
UTF-32 Encoding	0x0001D6EF
C/C++/Java Escape	\ud835\udeef

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	"ξ" U+03BE Greek Small Letter Xi
NFKC Simple Casefold	"ξ" U+03BE Greek Small Letter Xi
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