UnionPlus (Built-in Mathematica Symbol)

UnionPlus[x, y, ...] displays as x \[UnionPlus] y \[UnionPlus] ....

UpArrowBar (Built-in Mathematica Symbol)

UpArrowBar[x, y, ...] displays as x\[UpArrowBar]y\[UpArrowBar]....

UpArrowDownArrow (Built-in Mathematica Symbol)

UpArrowDownArrow[x, y, ...] displays as x\[UpArrowDownArrow]y\[UpArrowDownArrow]....

UpDownArrow (Built-in Mathematica Symbol)

UpDownArrow[x, y, ...] displays as x\[UpDownArrow]y\[UpDownArrow]....

UpEquilibrium (Built-in Mathematica Symbol)

UpEquilibrium[x, y, ...] displays as x\[UpEquilibrium]y\[UpEquilibrium]....

UpperLeftArrow (Built-in Mathematica Symbol)

UpperLeftArrow[x, y, ...] displays as x \[UpperLeftArrow] y \[UpperLeftArrow] ....

UpperRightArrow (Built-in Mathematica Symbol)

UpperRightArrow[x, y, ...] displays as x \[UpperRightArrow] y \[UpperRightArrow] ....

UpTeeArrow (Built-in Mathematica Symbol)

UpTeeArrow[x, y, ...] displays as x\[UpTeeArrow]y\[UpTeeArrow]....

Vee (Built-in Mathematica Symbol)

Vee[x, y, ...] displays as x\[Vee]y\[Vee]....

VerticalBar (Built-in Mathematica Symbol)

VerticalBar[x, y, ...] displays as x \[VerticalBar] y \[VerticalBar] ....