U+1D4AA "𝒪" Mathematical Script Capital O Unicode Character
Unicode Version 18.0
Source: Browser Default
U+1D4AA "𝒪" Mathematical Script Capital O is a typographic letterform used primarily in mathematical and scientific notation to represent a variable, function, or set, often distinct from a standard capital O to avoid confusion with the number zero or other alphanumeric symbols. This character belongs to the Mathematical Alphanumeric Symbols block, which was introduced in Unicode version 3.1 to support the specific formatting needs of mathematical texts, such as those in algebra, calculus, or logic. Its script style mimics a cursive or calligraphic appearance, making it a common choice in academic papers and textbooks for denoting mathematical objects like the set of orthogonal matrices or a Landau symbol in complexity theory.
General Properties
Code Point
U+1D4AA
Name
Mathematical Script Capital O
Decomposition Mapping
Encodings
HTML Decimal Encoding
𝒪
HTML Hex Encoding
𝒪
UTF-8 Encoding
0xF0 0x9D 0x92 0xAA
UTF-16 Encoding
0xD835 0xDCAA
UTF-32 Encoding
0x0001D4AA
C/C++/Java Escape
\ud835\udcaa
Unicode Properties
Numeric Value
NaN
NFKC Casefold
NFKC Simple Casefold
Script Extensions
Common