Unicode: 22B3. Infix ordering operator. x ⊳ y is by default interpreted as RightTriangle[x,y]. Used in pure mathematics to mean 'contains as a normal subgroup'.
\[Rule]
(Mathematica Character Name) Unicode: F522. Alias: Esc -> Esc. Infix operator with built-in evaluation rules. x y is by default interpreted as x->y or Rule[x,y]. x y z groups as x (y z). ...
Unicode: 2218. Alias: Esc sc Esc. Infix operator. x ∘ y is by default interpreted as SmallCircle[x,y]. Used to indicate function composition. Not the same as the letter-like ...
\[Star]
(Mathematica Character Name) Unicode: 22C6. Alias: Esc star Esc. Infix operator. x ⋆ y is by default interpreted as Star[x,y]. Used to denote convolution and generalized forms of multiplication. ...
Unicode: 2282. Alias: Esc sub Esc. Infix set relation operator. x ⊂ y is by default interpreted as Subset[x,y]. Usually used in mathematics to indicate subset; sometimes ...
Unicode: 227B. Infix ordering operator. x ≻ y is by default interpreted as Succeeds[x,y]. Used in mathematics to indicate various notions of partial ordering. Often applied ...
Unicode: 2283. Alias: Esc sup Esc. Infix set relation operator. x ⊃ y is by default interpreted as Superset[x,y]. Usually used in mathematics to indicate superset; sometimes ...
Unicode: 2009. Alias: Esc ␣␣ Esc. Spacing character. Width: 3/18 em. Interpreted by default just like an ordinary \[RawSpace].
Unicode: 2243. Alias: Esc ~= Esc. Infix similarity operator. x ≃ y is by default interpreted as TildeEqual[x,y]. Used to mean approximately or asymptotically equal. Also used ...
Unicode: 223C. Alias: Esc ~ Esc. Infix similarity operator. x ∼ y is by default interpreted as Tilde[x,y]. Used in mathematics for many notions of similarity or equivalence. ...