U+1D505 "𝔅" Mathematical Fraktur Capital B Unicode Character

Unicode Version 17.0

𝔅

U+1D505 "𝔅" Mathematical Fraktur Capital B is a stylized letterform belonging to the Mathematical Alphanumeric Symbols block, designed for use in mathematical and scientific notation where a distinct, blackletter style is desired. It represents a capital B in the Fraktur typeface, which is a form of blackletter script historically used in German printing and mathematical texts, particularly in expressions related to algebra, set theory, and geometry. This character is part of a standardized set that allows authors to clearly distinguish variables, operators, or special constants from standard Latin letters, ensuring precision in complex formal writing. While visually similar to the ordinary Fraktur letter in historical fonts, this specific Unicode code point is intended for semantic mathematical usage rather than decorative or historical typesetting.

General Properties

Code Point U+1D505
Version Added 3.1
Name Mathematical Fraktur Capital B
Block Mathematical Alphanumeric Symbols
General Category Uppercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "B" U+0042 Latin Capital Letter B

Encodings

HTML Decimal Encoding 𝔅
HTML Hex Encoding 𝔅
UTF-8 Encoding 0xF0 0x9D 0x94 0x85
UTF-16 Encoding 0xD835 0xDD05
UTF-32 Encoding 0x0001D505
C/C++/Java Escape \ud835\udd05

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 "b" U+0062 Latin Small Letter B
NFKC Simple Casefold "b" U+0062 Latin Small Letter B
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