\[EmptyRectangle] (Mathematica Character Name)

Unicode: 25AF. Letter-like form.

\[Exists] (Mathematica Character Name)

Unicode: 2203. Alias: Esc ex Esc. Compound operator. ∃_xy is by default interpreted as Exists[x,y].

\[FilledDiamond] (Mathematica Character Name)

Unicode: 25C6. Letter-like form.

\[ForAll] (Mathematica Character Name)

Unicode: 2200. Alias: Esc fa Esc. Compound operator. ∀_xy is by default interpreted as ForAll[x,y].

\[HeartSuit] (Mathematica Character Name)

Unicode: 2661. Letter-like form.

\[IGrave] (Mathematica Character Name)

Unicode: 00EC. Alias: Esc i` Esc. Letter. Included in ISO Latin-1.

\[IHat] (Mathematica Character Name)

Unicode: 00EE. Alias: Esc i^ Esc. Letter. Included in ISO Latin-1.

\[LSlash] (Mathematica Character Name)

Unicode: 0142. Alias: Esc l/ Esc. Letter. Included in ISO Latin-2.

\[NestedGreaterGreater] (Mathematica Character Name)

Unicode: 2AA2. Infix ordering operator. x ⪢ y is by default interpreted as NestedGreaterGreater[x,y].

\[NotExists] (Mathematica Character Name)

Unicode: 2204. Alias: Esc !ex Esc. Compound operator. ∄_xy is by default interpreted as NotExists[x,y].