U+1D541 "𝕁" Mathematical Double-Struck Capital J Unicode Character
Unicode Version 17.0
U+1D541 "𝕁" Mathematical Double-Struck Capital J is part of the Mathematical Alphanumeric Symbols block, specifically designed for use in mathematical notation to represent the blackboard bold style commonly associated with special number sets or abstract algebraic structures. This character, rendered as a double-struck capital J, is often employed in mathematical texts to denote a specific set or mathematical object, such as the imaginary unit in some contexts or a idele group in number theory, distinguishing it from the ordinary italic or serif capital J used in standard prose. Its inclusion in Unicode ensures that it can be reliably displayed and exchanged across different digital platforms, preserving the precise typographic conventions of mathematical typesetting without relying on formatting tricks or fallback fonts.
General Properties
Encodings
| HTML Decimal Encoding |
𝕁 |
| HTML Hex Encoding |
𝕁 |
| UTF-8 Encoding |
0xF0 0x9D 0x95 0x81 |
| UTF-16 Encoding |
0xD835 0xDD41 |
| UTF-32 Encoding |
0x0001D541 |
| C/C++/Java Escape |
\ud835\udd41 |
Unicode Properties