U+1D53D "𝔽" Mathematical Double-Struck Capital F Unicode Character

U+1D53D "𝔽" Mathematical Double-Struck Capital F is a typographic symbol that belongs to the Mathematical Alphanumeric Symbols block, designed for use in mathematical and scientific notation. It represents a blackboard bold uppercase F, a style traditionally associated with denoting specific number sets such as the field of real numbers (mathbb{R}) or rational numbers (mathbb{Q}), and in this case (mathbb{F}) is commonly used to represent an arbitrary field in algebra, particularly in contexts like field theory, linear algebra, and coding theory. This character allows mathematicians to clearly distinguish between ordinary text and mathematical variables or sets, ensuring precision in digital typesetting and document preparation.

General Properties

Code Point	U+1D53D
Version Added	3.1
Name	Mathematical Double-Struck Capital F
Block	Mathematical Alphanumeric Symbols
General Category	Uppercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"F" U+0046 Latin Capital Letter F

Encodings

HTML Decimal Encoding	𝔽
HTML Hex Encoding	𝔽
UTF-8 Encoding	0xF0 0x9D 0x94 0xBD
UTF-16 Encoding	0xD835 0xDD3D
UTF-32 Encoding	0x0001D53D
C/C++/Java Escape	\ud835\udd3d

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	"f" U+0066 Latin Small Letter F
NFKC Simple Casefold	"f" U+0066 Latin Small Letter F
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