U+1D6D6 "𝛖" Mathematical Bold Small Upsilon Unicode Character

U+1D6D6 "𝛖" Mathematical Bold Small Upsilon is a typographic symbol used primarily in mathematical and scientific notation to represent the Greek letter upsilon in a bold, upright font style, distinguishing it from both standard text and italic or regular-weight mathematical symbols. It belongs to the Unicode block Mathematical Alphanumeric Symbols, which was designed to provide unambiguous representations of letters for use in equations, formal logic, and other technical contexts where specific typographic variations carry distinct meanings. As a bold small upsilon, it may appear in vector notation, as a variable in physics or engineering, or as part of a set of styled Greek letters for consistency in typesetting complex formulas.

General Properties

Code Point	U+1D6D6
Version Added	3.1
Name	Mathematical Bold Small Upsilon
Block	Mathematical Alphanumeric Symbols
General Category	Lowercase Letter
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right
Decomposition Type	Font
Decomposition Mapping	"υ" U+03C5 Greek Small Letter Upsilon

Encodings

HTML Decimal Encoding	𝛖
HTML Hex Encoding	𝛖
UTF-8 Encoding	0xF0 0x9D 0x9B 0x96
UTF-16 Encoding	0xD835 0xDED6
UTF-32 Encoding	0x0001D6D6
C/C++/Java Escape	\ud835\uded6

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	"υ" U+03C5 Greek Small Letter Upsilon
NFKC Simple Casefold	"υ" U+03C5 Greek Small Letter Upsilon
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