U+1D445 "𝑅" Mathematical Italic Capital R Unicode Character

Unicode Version 17.0

𝑅

U+1D445 "𝑅" Mathematical Italic Capital R is a typographic symbol specifically designed for mathematical and scientific notation, distinct from the standard Latin capital R, to represent variables, matrices, or other entities in italicized textual contexts. It belongs to the Mathematical Alphanumeric Symbols block, which provides separate characters for bold, italic, script, and fraktur styles to ensure unambiguous rendering in complex formulas where formatting like font slope or weight carries semantic meaning. This character is commonly used in typesetting systems such as LaTeX or in Unicode-aware text editors to denote a variable or parameter, often appearing in documents on linear algebra, physics, or economics where a plain italic R might be confused with ordinary text. Its inclusion in the Unicode standard allows for consistent representation across different platforms and software without relying on dynamic font styling, preserving the intended mathematical interpretation.

General Properties

Code Point U+1D445
Version Added 3.1
Name Mathematical Italic Capital R
Block Mathematical Alphanumeric Symbols
General Category Uppercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "R" U+0052 Latin Capital Letter R

Encodings

HTML Decimal Encoding 𝑅
HTML Hex Encoding 𝑅
UTF-8 Encoding 0xF0 0x9D 0x91 0x85
UTF-16 Encoding 0xD835 0xDC45
UTF-32 Encoding 0x0001D445
C/C++/Java Escape \ud835\udc45

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 "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 Upper