Sinh (Built-in Mathematica Symbol)

Sinh[z] gives the hyperbolic sine of z.

Tanh (Built-in Mathematica Symbol)

Tanh[z] gives the hyperbolic tangent of z.

Zeta (Built-in Mathematica Symbol)

Zeta[s] gives the Riemann zeta function \[Zeta](s). Zeta[s, a] gives the generalized Riemann zeta function \[Zeta](s, a).

Graph Algorithms (Combinatorica Package Guide)

And (Built-in Mathematica Symbol)

e_1 && e_2 && ... is the logical AND function. It evaluates its arguments in order, giving False immediately if any of them are False, and True if they are all True.

Cell (Built-in Mathematica Symbol)

Cell[contents] is the low-level representation of a cell inside a Mathematica notebook. Cell[contents, " style"] represents a cell in the specified style.

Collect (Built-in Mathematica Symbol)

Collect[expr, x] collects together terms involving the same powers of objects matching x. Collect[expr, {x_1, x_2, ...}] collects together terms that involve the same powers ...

GeometricTransformation (Built-in Mathematica Symbol)

GeometricTransformation[g, tfun] represents the result of applying the transformation function tfun to the geometric objects corresponding to the primitives ...

LetterQ (Built-in Mathematica Symbol)

LetterQ[string] yields True if all the characters in the string are letters, and yields False otherwise.

SpheroidalPS (Built-in Mathematica Symbol)

SpheroidalPS[n, m, \[Gamma], z] gives the angular spheroidal function PS n, m (\[Gamma], z) of the first kind.