EvenQ[expr] gives True if expr is an even integer, and False otherwise.

KroneckerSymbol[n, m] gives the Kronecker symbol (n/m).

A "How to" describes how to carry out particular tasks with Mathematica, giving step-by-step instructions for common cases.

NArgMin[f, x] gives a position x_min at which f is numerically minimized.NArgMin[f, {x, y, ...}] gives a position {x_min, y_min, ...} at which f is numerically ...

VectorDensityPlot[{{v_x, v_y}, s}, {x, x_min, x_max}, {y, y_min, y_max}] generates a vector plot of the vector field {v_x, v_y} as a function of x and y, superimposed on a ...

Conjugate[z] or z\[Conjugate] gives the complex conjugate of the complex number z.

In a typical Mathematica package, there are generally two kinds of new symbols that are introduced. The first kind are ones that you want to 'export' for use outside the ...

Constrained optimization problems are problems for which a function f(x) is to be minimized or maximized subject to constraints Φ(x). Here f:^n  is called the objective ...

Most modern computer systems provide ways to collect code into libraries. These libraries are said to be dynamic if they can be loaded into an application at runtime rather ...

ProvablePrimeQ[n] gives True if n is provably prime, and False otherwise.