Unicode: 0148. Alias: Esc nv Esc. Letter. Included in ISO Latin-2.
Unicode: 2060. Alias: Esc nb Esc. Letter-like form. Used to indicate that no line break can occur at this position in an expression.
Unicode: 2209. Aliases: Esc !el Esc, Esc !elem Esc. Infix set relation operator with built-in evaluation rules. x ∉ y is by default interpreted as NotElement[x,y].
Unicode: 2260. Alias: Esc != Esc. Infix operator with built-in evaluation rules. x ≠ y is by default interpreted as Unequal[x,y].
Unicode: 03C9. Aliases: Esc o Esc, Esc omega Esc, Esc w Esc. Greek letter.
\[Or]
(Mathematica Character Name) Unicode: 2228. Aliases: Esc || Esc, Esc or Esc. Infix operator with built-in evaluation rules. x ∨ y is by default interpreted as Or[x,y], equivalent to x||y. Not the same as ...
Unicode: 00F8. Alias: Esc o/ Esc. Letter. Included in ISO Latin-1. Not the same as \[EmptySet].
Unicode: 2202. Alias: Esc pd Esc. Prefix operator with built-in evaluation rules. ∂_xy is by default interpreted as D[y,x]. ∂ is used in mathematics to indicate boundary. Esc ...
\[Phi]
(Mathematica Character Name) Unicode: 03D5. Aliases: Esc ph Esc, Esc phi Esc, Esc f Esc. Greek letter. Used in TraditionalForm for EulerPhi and GoldenRatio.
\[Pi]
(Mathematica Character Name) Unicode: 03C0. Aliases: Esc p Esc, Esc pi Esc. Greek letter with built-in value. Interpreted by default as the symbol Pi.