U+1D566 "𝕦" Mathematical Double-Struck Small U Unicode Character
Unicode Version 18.0
Source: Browser Default
U+1D566 "𝕦" Mathematical Double-Struck Small U is a typographic symbol belonging to the Mathematical Alphanumeric Symbols block, designed for use in mathematical and scientific notation to represent a variable in a bold, blackboard bold style. This double-struck form, characterized by its extra vertical stem strokes, is commonly employed in fields like set theory, linear algebra, and number theory to denote specific sets or elements, such as a vector or a member of a universal set. It is distinct from the standard Latin lowercase "u" to ensure clarity in complex equations, and its inclusion in Unicode allows for consistent digital representation across different platforms and fonts.
𝕥
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U+1D565
Mathematical Double-Struck Small T
𝕧
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U+1D567
Mathematical Double-Struck Small V
General Properties
Code Point
U+1D566
Name
Mathematical Double-Struck Small U
Decomposition Mapping
Encodings
HTML Decimal Encoding
𝕦
HTML Hex Encoding
𝕦
UTF-8 Encoding
0xF0 0x9D 0x95 0xA6
UTF-16 Encoding
0xD835 0xDD66
UTF-32 Encoding
0x0001D566
C/C++/Java Escape
\ud835\udd66
Unicode Properties
Numeric Value
NaN
NFKC Casefold
NFKC Simple Casefold
Script Extensions
Common