U+1D458 "𝑘" Mathematical Italic Small K Unicode Character

Unicode Version 17.0

𝑘

U+1D458 "𝑘" Mathematical Italic Small K is a typographic symbol that represents the lowercase letter k in a distinct italic style, specifically designed for use in mathematical and scientific notation to differentiate variables from regular text. It belongs to the Mathematical Alphanumeric Symbols block, which contains over a thousand such stylized letters and digits that allow for precise formatting in equations and formulas. This character ensures that when a variable like k appears in a complex expression, its mathematical significance is clearly communicated without reliance on font or formatting changes that might be lost in plain text. U+1D458 is commonly employed in fields such as physics, engineering, and computer science, where it can denote constants, indices, or other specialized values within a mathematical context.

General Properties

Code Point U+1D458
Version Added 3.1
Name Mathematical Italic Small K
Block Mathematical Alphanumeric Symbols
General Category Lowercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "k" U+006B Latin Small Letter K

Encodings

HTML Decimal Encoding 𝑘
HTML Hex Encoding 𝑘
UTF-8 Encoding 0xF0 0x9D 0x91 0x98
UTF-16 Encoding 0xD835 0xDC58
UTF-32 Encoding 0x0001D458
C/C++/Java Escape \ud835\udc58

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 "k" U+006B Latin Small Letter K
NFKC Simple Casefold "k" U+006B Latin Small Letter K
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