U+1D6AE "𝚮" Mathematical Bold Capital Eta Unicode Character

U+1D6AE "𝚮" Mathematical Bold Capital Eta is a specific glyph in the Mathematical Alphanumeric Symbols block, designed as a bold version of the capital Greek letter Eta. This character is intended for use in mathematical and scientific contexts, particularly to distinguish variables or constants that are represented by the same letter in different typefaces, such as in tensor calculus or quantum mechanics. Unlike its standard Greek counterpart in the Greek and Coptic block, this bold variant ensures clarity in complex formulas where different styles denote different meanings, and it is typically used in digital typesetting for academic papers, textbooks, or online mathematical notation.

General Properties

Code Point	U+1D6AE
Version Added	3.1
Name	Mathematical Bold 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 0x9A 0xAE
UTF-16 Encoding	0xD835 0xDEAE
UTF-32 Encoding	0x0001D6AE
C/C++/Java Escape	\ud835\udeae

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