U+1D636 "𝘶" Mathematical Sans-Serif Italic Small U Unicode Character

U+1D636 "𝘶" Mathematical Sans-Serif Italic Small U is a typographic variant of the standard Latin lowercase letter "u," designed for use in mathematical and scientific text where a sans-serif italic style is required to distinguish variables from surrounding notation. It belongs to the Unicode block "Mathematical Alphanumeric Symbols," which provides a wide range of styled letters to ensure clear, consistent representation in digital documents without relying on font-based formatting. This character is particularly useful for denoting variables, constants, or parameters in formulas, equations, and academic writing, where its clean sans-serif italic appearance helps maintain visual harmony and readability.

General Properties

Code Point	U+1D636
Version Added	3.1
Name	Mathematical Sans-Serif Italic Small U
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"u" U+0075 Latin Small Letter U

Encodings

HTML Decimal Encoding	𝘶
HTML Hex Encoding	𝘶
UTF-8 Encoding	0xF0 0x9D 0x98 0xB6
UTF-16 Encoding	0xD835 0xDE36
UTF-32 Encoding	0x0001D636
C/C++/Java Escape	\ud835\ude36

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	"u" U+0075 Latin Small Letter U
NFKC Simple Casefold	"u" U+0075 Latin Small Letter U
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