Testing Expressions (Mathematica Guide)

Mathematica symbolic expressions can represent an immense range of types of objects. Mathematica provides a rich collection of functions to test expressions. Functions that ...

Khinchin (Built-in Mathematica Symbol)

Khinchin is Khinchin's constant, with numerical value \[TildeEqual] 2.68545.

ArrayQ (Built-in Mathematica Symbol)

ArrayQ[expr] gives True if expr is a full array or a SparseArray object, and gives False otherwise. ArrayQ[expr, patt] requires expr to be a full array with a depth that ...

Constant (Built-in Mathematica Symbol)

Constant is an attribute that indicates zero derivative of a symbol with respect to all parameters.

TakeWhile (Built-in Mathematica Symbol)

TakeWhile[list, crit] gives elements e_i from the beginning of list, continuing so long as crit[e_i] is True.

VectorQ (Built-in Mathematica Symbol)

VectorQ[expr] gives True if expr is a list or a one-dimensional SparseArray object, none of whose elements are themselves lists, and gives False otherwise. VectorQ[expr, ...

Complexes (Built-in Mathematica Symbol)

Complexes represents the domain of complex numbers, as in x \[Element] Complexes.

ChampernowneNumber (Built-in Mathematica Symbol)

ChampernowneNumber[b] gives the base-b Champernowne number C_b.ChampernowneNumber[] gives the base-10 Champernowne number.

Glaisher (Built-in Mathematica Symbol)

Glaisher is Glaisher's constant with numerical value \[TildeEqual] 1.28243.

ExactNumberQ (Built-in Mathematica Symbol)

ExactNumberQ[expr] returns True if expr is an exact real or complex number, and returns False otherwise.