U+1D717 "𝜗" Mathematical Italic Theta Symbol Unicode Character

U+1D717 "𝜗" Mathematical Italic Theta Symbol is a typographic representation of the Greek letter theta specifically designed for use in mathematical and scientific contexts where italic formatting is required to denote variables or constants. It belongs to the “Mathematical Alphanumeric Symbols” block, which provides distinct characters for letters in various styles to avoid ambiguity between ordinary text and mathematical notation. This particular glyph allows theta to be clearly distinguished from other uses of the same letter, making it valuable for writing equations in disciplines such as physics, engineering, and mathematics, where theta often represents an angle or a phase parameter.

General Properties

Code Point	U+1D717
Version Added	3.1
Name	Mathematical Italic Theta Symbol
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"ϑ" U+03D1 Greek Theta Symbol

Encodings

HTML Decimal Encoding	𝜗
HTML Hex Encoding	𝜗
UTF-8 Encoding	0xF0 0x9D 0x9C 0x97
UTF-16 Encoding	0xD835 0xDF17
UTF-32 Encoding	0x0001D717
C/C++/Java Escape	\ud835\udf17

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	"θ" U+03B8 Greek Small Letter Theta
NFKC Simple Casefold	"θ" U+03B8 Greek Small Letter Theta
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