HeavisidePi (Built-in Mathematica Symbol)

HeavisidePi[x] represents the box distribution \[CapitalPi](x), equal to 1 for |x| < 1/2 and 0 for |x| > 1/2.HeavisidePi[x_1, x_2, ...] represents the multidimensional box ...

KroneckerSymbol (Built-in Mathematica Symbol)

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

PauliMatrix (Built-in Mathematica Symbol)

PauliMatrix[k] gives the k\[Null]^th Pauli spin matrix \[Sigma]_k.

Your First Mathematica Calculations (Mathematica Tutorial)

Type 2+2 and then press Shift+Enter (hold down the Shift key and press Enter) to tell Mathematica to evaluate your input. Note that labels are added automatically, and output ...

Subresultants (Built-in Mathematica Symbol)

Subresultants[poly_1, poly_2, var] generates a list of the principal subresultant coefficients of the polynomials poly_1 and poly_2 with respect to the variable var.

Numerical Examples (Library Link Tutorial)

The functions accessible with Wolfram LibraryLink make it possible to optimize numerical computations while still keeping the flexibility and generality of Mathematica. If ...

Counting and Isolating Polynomial Roots (Mathematica Tutorial)

Counting roots of polynomials. CountRoots accepts polynomials with Gaussian rational coefficients. The root count includes multiplicities. This gives the number of real roots ...

Principles of Evaluation (Mathematica Tutorial)

The fundamental operation that Mathematica performs is evaluation. Whenever you enter an expression, Mathematica evaluates the expression, then returns the result. Evaluation ...

Approximate Functions and Interpolation (Mathematica Tutorial)

In many kinds of numerical computations, it is convenient to introduce approximate functions. Approximate functions can be thought of as generalizations of ordinary ...

3D Graphics Options (Mathematica Guide)

Mathematica allows you to treat abstract 3D graphics using familiar physical metaphors. It provides not only real-time 3D manipulation, but also detailed programmatic control ...