U+1D6F9 "𝛹" Mathematical Italic Capital Psi Unicode Character

Unicode Version 17.0

𝛹

U+1D6F9 "𝛹" Mathematical Italic Capital Psi is a symbol from the Mathematical Alphanumeric Symbols block, representing the Greek letter psi in a slanted italic style for use in mathematical and scientific notation. It is distinct from the regular Greek capital psi to avoid confusion with ordinary text, allowing it to function as a variable or operator in formulas, particularly in fields like physics where it often denotes the wave function in quantum mechanics or the digamma function in number theory. This character ensures that mathematical expressions remain clear and unambiguous when italic formatting is required, and it is commonly used alongside other mathematical italic letters in typesetting systems like LaTeX or Unicode-aware text editors.

General Properties

Code Point U+1D6F9
Version Added 3.1
Name Mathematical Italic 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 0x9B 0xB9
UTF-16 Encoding 0xD835 0xDEF9
UTF-32 Encoding 0x0001D6F9
C/C++/Java Escape \ud835\udef9

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