U+1D575 "𝕵" Mathematical Bold Fraktur Capital J Unicode Character

Unicode Version 17.0

𝕵

U+1D575 "𝕵" Mathematical Bold Fraktur Capital J is a specialized typographic symbol belonging to the Mathematical Alphanumeric Symbols block, designed to represent the letter J in a bold Fraktur style for use in mathematical and scientific notation. This character is part of a larger set that provides distinct alphabetic forms needed to convey different meanings in formal contexts, such as in group theory, number theory, and abstract algebra, where bold Fraktur letters often denote ideals, Lie algebras, or other algebraic structures. Its inclusion in Unicode ensures that mathematicians and researchers can reliably display and share these precise symbols across different digital platforms and documents without relying on font-specific alternatives or workarounds.

General Properties

Code Point U+1D575
Version Added 3.1
Name Mathematical Bold Fraktur 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 0x95 0xB5
UTF-16 Encoding 0xD835 0xDD75
UTF-32 Encoding 0x0001D575
C/C++/Java Escape \ud835\udd75

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