U+1D421 "𝐡" Mathematical Bold Small H Unicode Character
Unicode Version 17.0
𝐡
U+1D421 "𝐡" Mathematical Bold Small H is a typographic glyph designed for use in mathematical and scientific notation to represent the letter 'h' in a bold weight, distinct from its standard text counterpart. This character belongs to the Mathematical Alphanumeric Symbols block and is part of a larger set of bold Latin letters intended to convey variables or vectors with clear semantic formatting in digital documents, ensuring that equations and formulas are rendered consistently across different platforms and fonts.
General Properties
| Code Point | U+1D421 |
| Version Added | 3.1 |
| Name | Mathematical Bold Small H |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Lowercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "h" U+0068 Latin Small Letter H |
Encodings
| HTML Decimal Encoding | 𝐡 |
| HTML Hex Encoding | 𝐡 |
| UTF-8 Encoding | 0xF0 0x9D 0x90 0xA1 |
| UTF-16 Encoding | 0xD835 0xDC21 |
| UTF-32 Encoding | 0x0001D421 |
| C/C++/Java Escape | \ud835\udc21 |
Unicode Properties
| NFC Quick Check | Yes |
| NFD Quick Check | Yes |
| Numeric Type | None |
| Numeric Value | NaN |
| Line Break | Alphabetic |
| Lowercase | Yes |
| Cased | Yes |
| Changes When NFKC Casefolded | Yes |
| NFKC Casefold | "h" U+0068 Latin Small Letter H |
| NFKC Simple Casefold | "h" U+0068 Latin Small Letter H |
| 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 | Lower |