| Name | MATHEMATICAL BOLD ITALIC CAPITAL J |
| Unicode Version | 3.1 |
| Block（ブロック） | Mathematical Alphanumeric Symbols（数学用英数字記号） |
| Plane（面） | Supplementary Multilingual Plane（基本多言語面） |
| Script | |
| Category | |
| Bidirectional Class | |
| Combining Class | |
| Character is Mirrored | |
| HTML Entity | 𝑱 𝑱 |
| UTF-8 Encoding | 𝑱 f09d91b1 |
| UTF-16 Encoding | 𝑱 d835dc71 |
| UTF-32 Encoding | 𝑱 0001d471 |