U+1D404 "𝐄" Mathematical Bold Capital E Unicode Character
Unicode Version 17.0
𝐄
U+1D404 "𝐄" Mathematical Bold Capital E is a typographic variant of the standard Latin capital letter E, specifically designed for use in mathematical and scientific notation to represent a bold weight within the Mathematical Alphanumeric Symbols block. This character ensures that the letter E retains a distinct, weighted appearance in equations, vectors, or variables while maintaining semantic clarity and avoiding reliance on font formatting. It was introduced in Unicode version 3.1 in 2001 to support consistent rendering of mathematical expressions across digital platforms.
General Properties
| Code Point | U+1D404 |
| Version Added | 3.1 |
| Name | Mathematical Bold Capital E |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "E" U+0045 Latin Capital Letter E |
Encodings
| HTML Decimal Encoding | 𝐄 |
| HTML Hex Encoding | 𝐄 |
| UTF-8 Encoding | 0xF0 0x9D 0x90 0x84 |
| UTF-16 Encoding | 0xD835 0xDC04 |
| UTF-32 Encoding | 0x0001D404 |
| C/C++/Java Escape | \ud835\udc04 |
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 | "e" U+0065 Latin Small Letter E |
| NFKC Simple Casefold | "e" U+0065 Latin Small Letter E |
| 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 |