U+1D6A5 "𝚥" Mathematical Italic Small Dotless J Unicode Character

Unicode Version 17.0

𝚥

U+1D6A5 "𝚥" Mathematical Italic Small Dotless J is a specialized typographic symbol used primarily in mathematical and scientific notation to represent a variable or index without the tittle or dot typically found on the lowercase letter j, thereby avoiding confusion with other diacritical marks or improving clarity in complex formulas. It belongs to the Mathematical Alphanumeric Symbols block, which was designed to provide distinct letter forms for mathematical typesetting, and it is particularly useful in fields such as physics and engineering where italicized letters denote variables. This character is rendered in a slanted italic style to match other mathematical variables in a document, ensuring visual consistency in equations and logical expressions.

General Properties

Code Point U+1D6A5
Version Added 4.1
Name Mathematical Italic Small Dotless J
Block Mathematical Alphanumeric Symbols
General Category Lowercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "ȷ" U+0237 Latin Small Letter Dotless J

Encodings

HTML Decimal Encoding 𝚥
HTML Hex Encoding 𝚥
UTF-8 Encoding 0xF0 0x9D 0x9A 0xA5
UTF-16 Encoding 0xD835 0xDEA5
UTF-32 Encoding 0x0001D6A5
C/C++/Java Escape \ud835\udea5

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 "ȷ" U+0237 Latin Small Letter Dotless J
NFKC Simple Casefold "ȷ" U+0237 Latin Small Letter Dotless J
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