U+1D712 "𝜒" Mathematical Italic Small Chi Unicode Character

Unicode Version 17.0

𝜒

U+1D712 "𝜒" Mathematical Italic Small Chi is a glyph representing the lowercase Greek letter chi in a slanted, italic style, specifically designed for use in mathematical and scientific notation. It belongs to the Mathematical Alphanumeric Symbols block, which was created to distinguish variables and constants from ordinary text, allowing for clearer formatting in documents involving formulas, statistics, and physics. This character avoids ambiguity with similarly shaped Latin letters like "x" and is commonly employed in fields such as probability theory for the chi-squared distribution, in relativity for the Lorentz factor, or in crystallography for atomic coordinates. Its inclusion in Unicode ensures consistent rendering across digital platforms and supports precise mathematical communication in typesetting systems like LaTeX.

General Properties

Code Point U+1D712
Version Added 3.1
Name Mathematical Italic Small Chi
Block Mathematical Alphanumeric Symbols
General Category Lowercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "χ" U+03C7 Greek Small Letter Chi

Encodings

HTML Decimal Encoding 𝜒
HTML Hex Encoding 𝜒
UTF-8 Encoding 0xF0 0x9D 0x9C 0x92
UTF-16 Encoding 0xD835 0xDF12
UTF-32 Encoding 0x0001D712
C/C++/Java Escape \ud835\udf12

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 "χ" U+03C7 Greek Small Letter Chi
NFKC Simple Casefold "χ" U+03C7 Greek Small Letter Chi
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