\[UpperRightArrow] (Mathematica Character Name)

Unicode: 2197. Infix arrow operator. x ↗ y is by default interpreted as UpperRightArrow[x,y]. Extensible character; grows by default to limited size.

\[Upsilon] (Mathematica Character Name)

Unicode: 03C5. Aliases: Esc u Esc, Esc upsilon Esc. Greek letter.

\[UpTeeArrow] (Mathematica Character Name)

Unicode: 21A5. Infix arrow operator. x ↥ y is by default interpreted as UpTeeArrow[x,y]. Extensible character.

\[UpTee] (Mathematica Character Name)

Unicode: 22A5. Alias: Esc uT Esc. Infix relational operator. x ⊥ y is by default interpreted as UpTee[x,y]. Used in geometry to indicate perpendicular. Used in number theory ...

\[URing] (Mathematica Character Name)

Unicode: 016F. Alias: Esc uo Esc. Letter. Included in ISO Latin-1.

\[VerticalEllipsis] (Mathematica Character Name)

Unicode: 22EE. Letter-like form. Used to indicate omitted elements in columns of a matrix.

\[WarningSign] (Mathematica Character Name)

Unicode: F725. Letter-like form. Used in yellow to indicate messages and other warnings in the default style for Mathematica notebooks. Based on an international standard ...

\[WatchIcon] (Mathematica Character Name)

Unicode: 231A. Letter-like form. Used to indicate a calculation that may take a long time.

\[WeierstrassP] (Mathematica Character Name)

Unicode: 2118. Alias: Esc wp Esc. Letter. Used to denote the function WeierstrassP. Not the same as \[ScriptCapitalP].

\[Xi] (Mathematica Character Name)

Unicode: 03BE. Aliases: Esc x Esc, Esc xi Esc. Greek letter.