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.

SphericalHarmonicY (Built-in Mathematica Symbol)

SphericalHarmonicY[l, m, \[Theta], \[Phi]] gives the spherical harmonic Y_l^m(\[Theta], \[Phi]).

StirlingS1 (Built-in Mathematica Symbol)

StirlingS1[n, m] gives the Stirling number of the first kind S_n^(m).

StringReplacePart (Built-in Mathematica Symbol)

StringReplacePart["string", " snew", {m, n}] replaces the characters at positions m through n in " string" by " snew". StringReplacePart["string", " snew", {{m_1, n_1}, {m_2, ...

Constructing Matrices (Mathematica Tutorial)

Functions for constructing matrices. This generates a 2×2 matrix whose i,j^th entry is a[i,j]. Here is another way to produce the same matrix.

Mathematical Notation in Notebooks (Mathematica Tutorial)

If you use a text-based interface to Mathematica, then the input you give must consist only of characters that you can type directly on your computer keyboard. But if you use ...

Advanced Numerical Differential ... (Mathematica Overview)

Introduction ODE Integration Methods Partial Differential Equations