U+1D7C5 "𝟅" Mathematical Sans-Serif Bold Italic Theta Symbol Unicode Character

U+1D7C5 "𝟅" Mathematical Sans-Serif Bold Italic Theta Symbol is a stylized version of the Greek letter theta, designed specifically for use in mathematical and scientific notation where a sans-serif, bold, and italic typeface is required. It belongs to the Mathematical Alphanumeric Symbols block, which provides distinct letter forms to avoid confusion with regular text and to represent variables, constants, or angles in contexts such as calculus, geometry, or physics. This character allows authors to clearly denote a special theta value or function while maintaining consistency with modern typographic conventions in technical documents.

General Properties

Code Point	U+1D7C5
Version Added	3.1
Name	Mathematical Sans-Serif Bold 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 0x9F 0x85
UTF-16 Encoding	0xD835 0xDFC5
UTF-32 Encoding	0x0001D7C5
C/C++/Java Escape	\ud835\udfc5

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