U+1D74B "𝝋" Mathematical Bold Italic Small Phi Unicode Character

U+1D74B "𝝋" Mathematical Bold Italic Small Phi is a typographic variant of the Greek letter phi, designed for use in mathematical and scientific notation where a bold, italicized form is required to distinguish it from ordinary text or other symbols. It belongs to the Mathematical Alphanumeric Symbols block, which provides a wide range of styled letters to avoid formatting ambiguities in complex equations. This specific character is often employed to represent variables such as the golden ratio, electrical potential, or phase angles in disciplines like physics, engineering, and mathematics. Its purpose is to ensure clear, consistent rendering of mathematical expressions across different software and platforms.

General Properties

Code Point	U+1D74B
Version Added	3.1
Name	Mathematical Bold Italic Small Phi
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"φ" U+03C6 Greek Small Letter Phi

Encodings

HTML Decimal Encoding	𝝋
HTML Hex Encoding	𝝋
UTF-8 Encoding	0xF0 0x9D 0x9D 0x8B
UTF-16 Encoding	0xD835 0xDF4B
UTF-32 Encoding	0x0001D74B
C/C++/Java Escape	\ud835\udf4b

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	"φ" U+03C6 Greek Small Letter Phi
NFKC Simple Casefold	"φ" U+03C6 Greek Small Letter Phi
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