NumericQ (Built-in Mathematica Symbol)

NumericQ[expr] gives True if expr is a numeric quantity, and False otherwise.

OpenerView (Built-in Mathematica Symbol)

OpenerView[{expr_1, expr_2}] represents an object which displays as an opener, together with expr_1 if the opener is closed, and both expr_1 and expr_2 if it is ...

Property (Built-in Mathematica Symbol)

Property[item, name -> value] associates the property name -> value with item.

UnitStep (Built-in Mathematica Symbol)

UnitStep[x] represents the unit step function, equal to 0 for x < 0 and 1 for x >= 0. UnitStep[x_1, x_2, ...] represents the multidimensional unit step function which is 1 ...

Two-Dimensional Graphics Elements (Mathematica Tutorial)

Basic two-dimensional graphics elements. Here is a line primitive. This shows the line as a two-dimensional graphics object.

Arrowheads (Built-in Mathematica Symbol)

Arrowheads[spec] is a graphics directive specifying that arrows that follow should have arrowheads with sizes, positions, and forms specified by spec.

Button (Built-in Mathematica Symbol)

Button[label, action] represents a button that is labeled with label, and evaluates action whenever it is clicked.

DirichletCharacter (Built-in Mathematica Symbol)

DirichletCharacter[k, j, n] gives the Dirichlet character \[Chi] {k, j} (n) with modulus k and index j.

ListCorrelate (Built-in Mathematica Symbol)

ListCorrelate[ker, list] forms the correlation of the kernel ker with list. ListCorrelate[ker, list, k] forms the cyclic correlation in which the k \[Null]^th element of ker ...

LogisticDistribution (Built-in Mathematica Symbol)

LogisticDistribution[\[Mu], \[Beta]] represents a logistic distribution with mean \[Mu] and scale parameter \[Beta].