U+1D6C8 "𝛈" Mathematical Bold Small Eta Unicode Character

U+1D6C8 "𝛈" Mathematical Bold Small Eta is a typographic glyph from the Mathematical Alphanumeric Symbols block, specifically designed for use in scientific and mathematical notation where a bold, italicized version of the Greek letter eta is required. This character is not a regular text letter but a dedicated mathematical symbol, intended to be semantically distinct from the standard Greek small eta, allowing authors and typesetting systems to clearly represent variables, constants, or other quantities in fields such as physics, engineering, and mathematics. Its bold weight and italic shape help it stand out in equations, particularly when used to denote angles, efficiency, or other specialized values within a complex formula.

General Properties

Code Point	U+1D6C8
Version Added	3.1
Name	Mathematical Bold Small Eta
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"η" U+03B7 Greek Small Letter Eta

Encodings

HTML Decimal Encoding	𝛈
HTML Hex Encoding	𝛈
UTF-8 Encoding	0xF0 0x9D 0x9B 0x88
UTF-16 Encoding	0xD835 0xDEC8
UTF-32 Encoding	0x0001D6C8
C/C++/Java Escape	\ud835\udec8

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	"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	Lower