U+1D722 "𝜢" Mathematical Bold Italic Capital Eta Unicode Character

U+1D722 "𝜢" Mathematical Bold Italic Capital Eta is a typographic symbol representing the Greek letter Eta (Η) in a bold and italic style, designed primarily for use in mathematical and scientific notation. It belongs to the Mathematical Alphanumeric Symbols block, which provides distinct letterforms to distinguish variables and constants from plain text, with this specific glyph often utilized to denote entities like viscosity, efficiency, or the Dedekind eta function in complex analysis. Its inclusion ensures that authors can clearly convey specialized meanings without relying on formatting workarounds that might be lost in plain text environments.

General Properties

Code Point	U+1D722
Version Added	3.1
Name	Mathematical Bold Italic Capital Eta
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"Η" U+0397 Greek Capital Letter Eta

Encodings

HTML Decimal Encoding	𝜢
HTML Hex Encoding	𝜢
UTF-8 Encoding	0xF0 0x9D 0x9C 0xA2
UTF-16 Encoding	0xD835 0xDF22
UTF-32 Encoding	0x0001D722
C/C++/Java Escape	\ud835\udf22

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	"η" U+03B7 Greek Small Letter Eta
NFKC Simple Casefold	"η" U+03B7 Greek Small Letter Eta
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