U+1D57A "𝕺" Mathematical Bold Fraktur Capital O Unicode Character
Unicode Version 17.0
U+1D57A "𝕺" Mathematical Bold Fraktur Capital O is a typographic symbol belonging to the Mathematical Alphanumeric Symbols block, designed for use in mathematical and scientific notation to represent the letter O in a bold, blackletter style. Its form combines the heavy stroke weight of bold typefaces with the ornate, angular curves characteristic of Fraktur script, which historically derives from medieval Germanic calligraphy. In modern technical contexts, this character is often employed to denote specific mathematical objects, such as sets, algebraic structures, or operators, where a distinct visual style helps differentiate variables or constants from standard Latin letters. While it resembles the ordinary capital O, its Fraktur appearance provides a clear semantic distinction, making it valuable in disciplines like set theory, number theory, and logic. This character is not typically used in plain text or general writing, as its specialized design is reserved for formal mathematic
General Properties
Encodings
| HTML Decimal Encoding |
𝕺 |
| HTML Hex Encoding |
𝕺 |
| UTF-8 Encoding |
0xF0 0x9D 0x95 0xBA |
| UTF-16 Encoding |
0xD835 0xDD7A |
| UTF-32 Encoding |
0x0001D57A |
| C/C++/Java Escape |
\ud835\udd7a |
Unicode Properties