Unicode: 03C3. Aliases: Esc s Esc, Esc sigma Esc. Greek letter. Used in TraditionalForm for DivisorSigma and WeierstrassSigma.

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 ...

Unicode: F520. Alias: Esc sq Esc. Prefix operator.  x is by default interpreted as Square[x]. Used in mathematical physics to denote the d'Alembertian operator. Sometimes ...

Unicode: 00A3. Letter-like form. Currency symbol for British pound sterling, as in £ 5. Used in mathematics to denote Lie derivative.

Unicode: 03DB. Aliases: Esc sti Esc, Esc  stigma Esc. Special Greek letter. Appeared between ϵ and ζ in early Greek alphabet; used for Greek numeral 6. Not the same as ...

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: 220D. Alias: Esc st Esc. Infix operator. x ∍ y is by default interpreted as SuchThat[x,y]. x ∍ y ∍ z groups as x ∍ (y ∍ z). Not the same as \[ReverseElement].

Unicode: 2211. Alias: Esc sum Esc. Compound operator with built-in evaluation rules. ∑_(i)^i_max(f) is by default interpreted as Sum[f,{i,i_max}]. ∑_(i=i_min)^i_max(f)f is by ...

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: 00DF. Aliases: Esc sz Esc, Esc ss Esc. Letter. Used in German. Sometimes called s sharp, ess-zed or ess-zet. Usually transliterated in English as ss. Upper-case form ...