U+1D412 "𝐒" Mathematical Bold Capital S Unicode Character
Unicode Version 17.0
𝐒
U+1D412 "𝐒" Mathematical Bold Capital S is a stylized variant of the standard capital letter S, belonging to the Mathematical Alphanumeric Symbols block, which was added to the Unicode Standard to allow for clear, distinct mathematical notation. It is specifically designed for use in mathematical and scientific contexts where a bold typeface is needed to represent vectors, matrices, sets, or other variables that require visual emphasis separate from regular text. Despite its distinctive appearance, this character is not intended for ordinary prose; rather, it serves as a specialized typographic tool for technical documents, textbooks, and academic papers.
General Properties
| Code Point | U+1D412 |
| Version Added | 3.1 |
| Name | Mathematical Bold Capital S |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "S" U+0053 Latin Capital Letter S |
Encodings
| HTML Decimal Encoding | 𝐒 |
| HTML Hex Encoding | 𝐒 |
| UTF-8 Encoding | 0xF0 0x9D 0x90 0x92 |
| UTF-16 Encoding | 0xD835 0xDC12 |
| UTF-32 Encoding | 0x0001D412 |
| C/C++/Java Escape | \ud835\udc12 |
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 | "s" U+0073 Latin Small Letter S |
| NFKC Simple Casefold | "s" U+0073 Latin Small Letter S |
| 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 |