U+1D434 "𝐴" Mathematical Italic Capital A Unicode Character

U+1D434 "𝐴" Mathematical Italic Capital A is a typographic symbol used primarily in mathematical and scientific notation to denote a variable, vector, or a specific point, distinguishing it from the standard Latin capital A. It is part of the Mathematical Alphanumeric Symbols block, which was introduced to allow mathematicians and writers to clearly represent different styles of letters in electronic text without relying on formatting hacks. This character is visually identical to an italicized capital A but is encoded as its own distinct code point, ensuring that its italic appearance is preserved across different fonts and platforms for consistent rendering in equations or academic papers.

General Properties

Code Point	U+1D434
Version Added	3.1
Name	Mathematical Italic Capital A
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"A" U+0041 Latin Capital Letter A

Encodings

HTML Decimal Encoding	𝐴
HTML Hex Encoding	𝐴
UTF-8 Encoding	0xF0 0x9D 0x90 0xB4
UTF-16 Encoding	0xD835 0xDC34
UTF-32 Encoding	0x0001D434
C/C++/Java Escape	\ud835\udc34

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	"a" U+0061 Latin Small Letter A
NFKC Simple Casefold	"a" U+0061 Latin Small Letter A
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