U+1D439 "𝐹" Mathematical Italic Capital F Unicode Character

U+1D439 "𝐹" Mathematical Italic Capital F is a typographic symbol from the Mathematical Alphanumeric Symbols block, specifically designed for use in mathematical and scientific notation to represent a variable, function, or unknown quantity in an italic style distinct from the standard Latin capital F. This character allows authors and typesetting systems to clearly differentiate a mathematical variable from ordinary prose, avoiding the need for markup or font changes in plain-text environments. It is commonly employed in equations, algebra, and calculus contexts, where the italic Capital F may denote a function, a force vector in physics, or a formal parameter in mathematical expressions.

General Properties

Code Point	U+1D439
Version Added	3.1
Name	Mathematical Italic 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 0x90 0xB9
UTF-16 Encoding	0xD835 0xDC39
UTF-32 Encoding	0x0001D439
C/C++/Java Escape	\ud835\udc39

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