U+1D73F "𝜿" Mathematical Bold Italic Small Kappa Unicode Character

Unicode Version 17.0

𝜿

U+1D73F "𝜿" Mathematical Bold Italic Small Kappa is a typographic variant of the Greek letter kappa, specifically designed for mathematical and scientific notation where a bold italic style is required. It belongs to the Mathematical Alphanumeric Symbols block, which provides distinct letterforms to represent variables, constants, and operators in contexts such as algebra, calculus, physics, and engineering. This character allows authors to differentiate the kappa from other symbols like the Latin letter k or the Hebrew letter kaf, ensuring clarity in complex formulas where font style conveys semantic meaning. As a stylized glyph, it can represent anything from a curvature parameter in geometry to a thermal conductivity coefficient in thermodynamics, and it is commonly used in typesetting systems like LaTeX via commands such as `oldsymbol{kappa}` or through direct Unicode input.

General Properties

Code Point U+1D73F
Version Added 3.1
Name Mathematical Bold Italic Small Kappa
Block Mathematical Alphanumeric Symbols
General Category Lowercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "κ" U+03BA Greek Small Letter Kappa

Encodings

HTML Decimal Encoding 𝜿
HTML Hex Encoding 𝜿
UTF-8 Encoding 0xF0 0x9D 0x9C 0xBF
UTF-16 Encoding 0xD835 0xDF3F
UTF-32 Encoding 0x0001D73F
C/C++/Java Escape \ud835\udf3f

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 "κ" U+03BA Greek Small Letter Kappa
NFKC Simple Casefold "κ" U+03BA Greek Small Letter Kappa
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