Catalan (Built-in Mathematica Symbol)

Catalan is Catalan's constant, with numerical value \[TildeEqual] 0.915966.

ChebyshevT (Built-in Mathematica Symbol)

ChebyshevT[n, x] gives the Chebyshev polynomial of the first kind T_n (x).

DedekindEta (Built-in Mathematica Symbol)

DedekindEta[\[Tau]] gives the Dedekind eta modular elliptic function \[Eta](\[Tau]).

Depth (Built-in Mathematica Symbol)

Depth[expr] gives the maximum number of indices needed to specify any part of expr, plus 1.

EulerGamma (Built-in Mathematica Symbol)

EulerGamma is Euler's constant \[Gamma], with numerical value \[TildeEqual] 0.577216.

JacobiSymbol (Built-in Mathematica Symbol)

JacobiSymbol[n, m] gives the Jacobi symbol (n/m).

LeafCount (Built-in Mathematica Symbol)

LeafCount[expr] gives the total number of indivisible subexpressions in expr.

MathieuC (Built-in Mathematica Symbol)

MathieuC[a, q, z] gives the even Mathieu function with characteristic value a and parameter q.

PartitionsP (Built-in Mathematica Symbol)

PartitionsP[n] gives the number p (n) of unrestricted partitions of the integer n.

Pi (Built-in Mathematica Symbol)

Pi is \[Pi], with numerical value \[TildeEqual] 3.14159.