U+1D645 "𝙅" Mathematical Sans-Serif Bold Italic Capital J Unicode Character

Unicode Version 17.0

𝙅

U+1D645 "𝙅" Mathematical Sans-Serif Bold Italic Capital J is a specialized typographic symbol belonging to the Mathematical Alphanumeric Symbols block, designed for use in scientific and mathematical notation where a bold, italic, sans-serif style is needed to distinguish variables or constants from standard text. It represents the capital letter J in a clean, modern sans-serif typeface with a slanted italic form and heavier stroke weight, allowing it to fit seamlessly into complex equations or technical documents that require precise formatting. This character is part of a larger set of mathematically styled letters that help avoid ambiguity in formal writing, and it should not be confused with the ordinary Latin capital J, as its appearance and encoding purpose are specific to mathematical contexts.

General Properties

Code Point U+1D645
Version Added 3.1
Name Mathematical Sans-Serif Bold Italic Capital J
Block Mathematical Alphanumeric Symbols
General Category Uppercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "J" U+004A Latin Capital Letter J

Encodings

HTML Decimal Encoding 𝙅
HTML Hex Encoding 𝙅
UTF-8 Encoding 0xF0 0x9D 0x99 0x85
UTF-16 Encoding 0xD835 0xDE45
UTF-32 Encoding 0x0001D645
C/C++/Java Escape \ud835\ude45

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 "j" U+006A Latin Small Letter J
NFKC Simple Casefold "j" U+006A Latin Small Letter 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 Upper