U+211C "ℜ" Black-Letter Capital R Unicode Character
Unicode Version 17.0
ℜ
U+211C "ℜ" Black-Letter Capital R is a typographic symbol derived from medieval blackletter or Gothic script, representing a capital R with ornate, angular strokes. In modern usage, it is most commonly employed in mathematics and the hard sciences, particularly to denote the real part of a complex number or the set of real numbers when styled in Fraktur or blackletter type. It also appears in formal academic contexts or decorative text to evoke an old-fashioned or scholarly aesthetic, and it is frequently used as a symbol in logic and set theory.
General Properties
| Code Point | U+211C |
| Version Added | 1.1 |
| Name | Black-Letter Capital R |
| Unicode 1.0 Name | Black-Letter R |
| Block | Letterlike 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 | 0xE2 0x84 0x9C |
| UTF-16 Encoding | 0x211C |
| UTF-32 Encoding | 0x0000211C |
| C/C++/Java Escape | \u211c |
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 |