U+1D724 "𝜤" Mathematical Bold Italic Capital Iota Unicode Character
Unicode Version 17.0
𝜤
U+1D724 "𝜤" Mathematical Bold Italic Capital Iota is a typographic symbol used primarily in mathematical and scientific notation to denote a bold italic variant of the Greek capital letter Iota, often employed as a variable or constant in fields such as physics, engineering, and advanced mathematics to represent quantities like identity matrices or specific indices. It belongs to the Mathematical Alphanumeric Symbols block, encoded at code point U+1D724, and is distinct from the standard Greek Iota to provide a clear visual distinction in complex formulas where multiple font styles are required for precision.
General Properties
| Code Point | U+1D724 |
| Version Added | 3.1 |
| Name | Mathematical Bold Italic Capital Iota |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "Ι" U+0399 Greek Capital Letter Iota |
Encodings
| HTML Decimal Encoding | 𝜤 |
| HTML Hex Encoding | 𝜤 |
| UTF-8 Encoding | 0xF0 0x9D 0x9C 0xA4 |
| UTF-16 Encoding | 0xD835 0xDF24 |
| UTF-32 Encoding | 0x0001D724 |
| C/C++/Java Escape | \ud835\udf24 |
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 | "ι" U+03B9 Greek Small Letter Iota |
| NFKC Simple Casefold | "ι" U+03B9 Greek Small Letter Iota |
| 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 |