U+1D446 "𝑆" Mathematical Italic Capital S Unicode Character

Unicode Version 17.0

𝑆

U+1D446 "𝑆" Mathematical Italic Capital S is a distinct glyph from the standard Latin capital S, used specifically to represent the variable S in mathematical and scientific notation where italic formatting is semantically meaningful. It belongs to the Mathematical Alphanumeric Symbols block, which was introduced to provide unambiguous typographic variants for use in formulas, ensuring that a mathematical italic S is differentiated from a regular italic letter S in plain text environments. This character is commonly employed in fields such as physics, engineering, and higher mathematics to denote tensors, surfaces, or specific functions, and it follows the standard Unicode uppercase italic S design for consistent rendering across digital platforms.

General Properties

Code Point U+1D446
Version Added 3.1
Name Mathematical Italic Capital S
Block Mathematical Alphanumeric Symbols
General Category Uppercase Letter
Canonical Combining Class Not Reordered
Bidirectional Class Left To Right
Decomposition Type Font
Decomposition Mapping "S" U+0053 Latin Capital Letter S

Encodings

HTML Decimal Encoding 𝑆
HTML Hex Encoding 𝑆
UTF-8 Encoding 0xF0 0x9D 0x91 0x86
UTF-16 Encoding 0xD835 0xDC46
UTF-32 Encoding 0x0001D446
C/C++/Java Escape \ud835\udc46

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 "s" U+0073 Latin Small Letter S
NFKC Simple Casefold "s" U+0073 Latin Small Letter S
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