U+1D6BF "𝚿" Mathematical Bold Capital Psi Unicode Character
Unicode Version 17.0
𝚿
U+1D6BF "𝚿" Mathematical Bold Capital Psi is a typographical variant of the Greek capital letter Psi (Ψ) rendered in a bold typeface, allowing it to stand out distinctly in mathematical or scientific notation. It belongs to the "Mathematical Alphanumeric Symbols" block, which was introduced to provide unambiguously styled letters for use in formulas where normal text formatting might be lost or misinterpreted. This character often represents the wave function in quantum mechanics, as well as various functions and angles in higher mathematics and engineering.
General Properties
| Code Point | U+1D6BF |
| Version Added | 3.1 |
| Name | Mathematical Bold Capital Psi |
| Block | Mathematical Alphanumeric Symbols |
| General Category | Uppercase Letter |
| Canonical Combining Class | Not Reordered |
| Bidirectional Class | Left To Right |
| Decomposition Type | Font |
| Decomposition Mapping | "Ψ" U+03A8 Greek Capital Letter Psi |
Encodings
| HTML Decimal Encoding | 𝚿 |
| HTML Hex Encoding | 𝚿 |
| UTF-8 Encoding | 0xF0 0x9D 0x9A 0xBF |
| UTF-16 Encoding | 0xD835 0xDEBF |
| UTF-32 Encoding | 0x0001D6BF |
| C/C++/Java Escape | \ud835\udebf |
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 | "ψ" U+03C8 Greek Small Letter Psi |
| NFKC Simple Casefold | "ψ" U+03C8 Greek Small Letter Psi |
| 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 |