U+1D78A "𝞊" Mathematical Sans-Serif Bold Epsilon Symbol Unicode Character

U+1D78A "𝞊" Mathematical Sans-Serif Bold Epsilon Symbol is a specialized typographic glyph used primarily in mathematical and scientific notation to represent the Greek letter epsilon in a sans-serif, bold typeface. It belongs to the Unicode block Mathematical Alphanumeric Symbols, which was designed to provide distinct code points for letters that carry specific stylistic or semantic meaning in formulas, distinguishing them from ordinary text. This symbol is commonly employed in fields such as set theory, calculus, and computer science to denote small positive quantities, membership relations, or arbitrary constants where the bold, sans-serif styling ensures clarity and separation from surrounding variables.

General Properties

Code Point	U+1D78A
Version Added	3.1
Name	Mathematical Sans-Serif Bold Epsilon Symbol
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"ϵ" U+03F5 Greek Lunate Epsilon Symbol

Encodings

HTML Decimal Encoding	𝞊
HTML Hex Encoding	𝞊
UTF-8 Encoding	0xF0 0x9D 0x9E 0x8A
UTF-16 Encoding	0xD835 0xDF8A
UTF-32 Encoding	0x0001D78A
C/C++/Java Escape	\ud835\udf8a

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	"ε" U+03B5 Greek Small Letter Epsilon
NFKC Simple Casefold	"ε" U+03B5 Greek Small Letter Epsilon
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