U+1D493 "𝒓" Mathematical Bold Italic Small R Unicode Character

Unicode Version 17.0

𝒓

U+1D493 "𝒓" Mathematical Bold Italic Small R is a typographic symbol belonging to the Mathematical Alphanumeric Symbols block, designed specifically for use in mathematical and scientific notation to represent a variable or scalar in a bold italic style. This character is part of a larger set of over a thousand specialized letterforms that allow mathematicians, physicists, and engineers to clearly distinguish between different types of variables, vectors, and constants in printed equations. Its bold italic appearance combines the emphasis of bold weight with the slant of italic, commonly used to denote a vector quantity or a specific mathematical entity in fields like linear algebra or physics. While visually similar to an ordinary bold italic "r" in many fonts, its encoding as a distinct Unicode character ensures that it is recognized as a mathematical symbol rather than a stylistic variant of the Latin letter, preserving semantic meaning across different software and platforms.

General Properties

Code Point U+1D493
Version Added 3.1
Name Mathematical Bold Italic Small R
Block Mathematical Alphanumeric Symbols
General Category Lowercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "r" U+0072 Latin Small Letter R

Encodings

HTML Decimal Encoding 𝒓
HTML Hex Encoding 𝒓
UTF-8 Encoding 0xF0 0x9D 0x92 0x93
UTF-16 Encoding 0xD835 0xDC93
UTF-32 Encoding 0x0001D493
C/C++/Java Escape \ud835\udc93

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 "r" U+0072 Latin Small Letter R
NFKC Simple Casefold "r" U+0072 Latin Small Letter R
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