U+1D640 "𝙀" Mathematical Sans-Serif Bold Italic Capital E Unicode Character

U+1D640 "𝙀" Mathematical Sans-Serif Bold Italic Capital E is a typographic symbol used primarily in mathematical and scientific notation to represent a variable, vector, matrix, or set in a clear, stylized form that combines a sans-serif typeface with both bold weight and italic slant. This character belongs to the "Mathematical Alphanumeric Symbols" block, which was added to Unicode to allow mathematicians and scholars to distinguish between different semantic meanings of letters in formulas without relying on font formatting alone. Its design ensures that it stands out from standard text characters, reducing ambiguity in complex equations where a capital E might otherwise be confused with other symbols or numerals.

General Properties

Code Point	U+1D640
Version Added	3.1
Name	Mathematical Sans-Serif Bold Italic Capital E
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"E" U+0045 Latin Capital Letter E

Encodings

HTML Decimal Encoding	𝙀
HTML Hex Encoding	𝙀
UTF-8 Encoding	0xF0 0x9D 0x99 0x80
UTF-16 Encoding	0xD835 0xDE40
UTF-32 Encoding	0x0001D640
C/C++/Java Escape	\ud835\ude40

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	"e" U+0065 Latin Small Letter E
NFKC Simple Casefold	"e" U+0065 Latin Small Letter E
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