U+1D418 "𝐘" Mathematical Bold Capital Y Unicode Character
Unicode Version 17.0
𝐘
U+1D418 "𝐘" Mathematical Bold Capital Y is a stylized version of the uppercase letter Y, designed for use in mathematical and scientific notation where bold formatting is required to distinguish variables, sets, or vectors from standard text. It belongs to the Mathematical Alphanumeric Symbols block, which provides distinct character encodings for various letter styles to prevent ambiguity in digital typesetting. This particular character allows writers and researchers to include a bold Latin capital Y in plain text documents without relying on font formatting, ensuring consistent representation across different platforms and systems.
General Properties
| Code Point | U+1D418 |
| Version Added | 3.1 |
| Name | Mathematical Bold Capital Y |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "Y" U+0059 Latin Capital Letter Y |
Encodings
| HTML Decimal Encoding | 𝐘 |
| HTML Hex Encoding | 𝐘 |
| UTF-8 Encoding | 0xF0 0x9D 0x90 0x98 |
| UTF-16 Encoding | 0xD835 0xDC18 |
| UTF-32 Encoding | 0x0001D418 |
| C/C++/Java Escape | \ud835\udc18 |
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 | "y" U+0079 Latin Small Letter Y |
| NFKC Simple Casefold | "y" U+0079 Latin Small Letter Y |
| 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 |