U+1D512 "𝔒" Mathematical Fraktur Capital O Unicode Character
Unicode Version 17.0
𝔒
U+1D512 "𝔒" Mathematical Fraktur Capital O is a stylized letter O from the Fraktur typeface, included in the Mathematical Alphanumeric Symbols block for use in mathematical and scientific notation. This character is designed to represent a capital O in a blackletter style, often employed to denote specific mathematical objects such as rings, modules, or operators in algebra and number theory. Its inclusion in Unicode helps distinguish it from a standard "O" in plain text, ensuring clarity in formal writing where different alphabetic styles carry distinct meanings.
General Properties
| Code Point | U+1D512 |
| Version Added | 3.1 |
| Name | Mathematical Fraktur Capital O |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "O" U+004F Latin Capital Letter O |
Encodings
| HTML Decimal Encoding | 𝔒 |
| HTML Hex Encoding | 𝔒 |
| UTF-8 Encoding | 0xF0 0x9D 0x94 0x92 |
| UTF-16 Encoding | 0xD835 0xDD12 |
| UTF-32 Encoding | 0x0001D512 |
| C/C++/Java Escape | \ud835\udd12 |
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 | "o" U+006F Latin Small Letter O |
| NFKC Simple Casefold | "o" U+006F Latin Small Letter O |
| 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 |