U+1D7C1 "𝟁" Mathematical Sans-Serif Bold Italic Small Psi Unicode Character

U+1D7C1 "𝟁" Mathematical Sans-Serif Bold Italic Small Psi is a typographic variant of the Greek letter psi, designed for use in mathematical and scientific notation where a distinct, stylized character is needed to avoid confusion with other symbols. It belongs to the Mathematical Alphanumeric Symbols block and combines a sans-serif typeface with bold and italic styling, making it suitable for representing variables, functions, or operators in formulas within documents that employ modern typographic conventions. This character is not a standard Greek letter for general text, but is specifically encoded to support precise and semantically meaningful mathematical typesetting across different fonts and platforms.

General Properties

Code Point	U+1D7C1
Version Added	3.1
Name	Mathematical Sans-Serif Bold Italic Small Psi
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"ψ" U+03C8 Greek Small Letter Psi

Encodings

HTML Decimal Encoding	𝟁
HTML Hex Encoding	𝟁
UTF-8 Encoding	0xF0 0x9D 0x9F 0x81
UTF-16 Encoding	0xD835 0xDFC1
UTF-32 Encoding	0x0001D7C1
C/C++/Java Escape	\ud835\udfc1

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	"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	Lower