\[UGrave] (Mathematica Character Name)

Unicode: 00F9. Alias: Esc u` Esc. Letter. Included in ISO Latin-1.

\[UHat] (Mathematica Character Name)

Unicode: 00FB. Alias: Esc u^ Esc. Letter. Included in ISO Latin-1.

\[UndirectedEdge] (Mathematica Character Name)

Unicode: 0F3D4. Aliases: Esc ue Esc. Infix operator with built-in evaluation rules. uv is by default interpreted as UndirectedEdge[u,v].

\[UnionPlus] (Mathematica Character Name)

Unicode: 228E. Infix operator. x ⊎ y is by default interpreted as UnionPlus[x,y]. Used to denote union of multisets, in which multiplicities of elements are added.

\[VerticalEllipsis] (Mathematica Character Name)

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

\[VerticalTilde] (Mathematica Character Name)

Unicode: 2240. Infix operator. x ≀ y is by default interpreted as VerticalTilde[x,y]. Used in mathematics to mean wreath product.

\[Xnor] (Mathematica Character Name)

Unicode: F4A2 Alias: Esc xnor Esc. Infix operator with built-in evaluation rules. x  y is by default interpreted as Xnor[x,y].

\[Xor] (Mathematica Character Name)

Unicode: 22BB. Alias: Esc xor Esc. Infix operator with built-in evaluation rules. x ⊻ y is by default interpreted as Xor[x,y].

\[YAcute] (Mathematica Character Name)

Unicode: 00FD. Alias: Esc y' Esc. Letter. Included in ISO Latin-1.

\[Yen] (Mathematica Character Name)

Unicode: 00A5. Letter-like form. Currency symbol for Japanese yen, as in ¥5000.