ExpIntegralE (Built-in Mathematica Symbol)

ExpIntegralE[n, z] gives the exponential integral function E_n (z).

LerchPhi (Built-in Mathematica Symbol)

LerchPhi[z, s, a] gives the Lerch transcendent \[CapitalPhi] (z, s, a).

Associating Definitions with Different ... (Mathematica Tutorial)

When you make a definition in the form f[args]=rhs or f[args]:=rhs, Mathematica associates your definition with the object f. This means, for example, that such definitions ...

Flat and Orderless Functions (Mathematica Tutorial)

Although Mathematica matches patterns in a purely structural fashion, its notion of structural equivalence is quite sophisticated. In particular, it takes account of ...

ArcCos (Built-in Mathematica Symbol)

ArcCos[z] gives the arc cosine cos -1 (z) of the complex number z.

Cosh (Built-in Mathematica Symbol)

Cosh[z] gives the hyperbolic cosine of z.

Coth (Built-in Mathematica Symbol)

Coth[z] gives the hyperbolic cotangent of z.

Cot (Built-in Mathematica Symbol)

Cot[z] gives the cotangent of z.

Csch (Built-in Mathematica Symbol)

Csch[z] gives the hyperbolic cosecant of z.

EllipticTheta (Built-in Mathematica Symbol)

EllipticTheta[a, u, q] gives the theta function \[CurlyTheta]_a (u, q) (a = 1, ..., 4).