PrimeOmega (Built-in Mathematica Symbol)

PrimeOmega[n] gives the number of prime factors counting multiplicities \[CapitalOmega](n) in n.

Rationals (Built-in Mathematica Symbol)

Rationals represents the domain of rational numbers, as in x \[Element] Rationals.

SampledSoundFunction (Built-in Mathematica Symbol)

SampledSoundFunction[f, n, r] is a sound primitive that represents a sound whose amplitude sampled r times a second is generated by applying the function f to successive ...

SetSelectedNotebook (Built-in Mathematica Symbol)

SetSelectedNotebook[notebook] makes the specified notebook be the currently selected one in the front end.

Shallow (Built-in Mathematica Symbol)

Shallow[expr] prints as a shallow form of expr. Shallow[expr, depth] prints with all parts of expr below the specified depth given in skeleton form. Shallow[expr, {depth, ...

Splice (Built-in Mathematica Symbol)

Splice["file"] splices Mathematica output into an external file. It takes text enclosed between < * and * > in the file, evaluates the text as Mathematica input, and replaces ...

SystemsModelExtract (Built-in Mathematica Symbol)

SystemsModelExtract[sys, {i_1, i_2, ...}] extracts the subsystem of the StateSpaceModel or TransferFunctionModel object sys associated with inputs at position ...

$MachinePrecision (Built-in Mathematica Symbol)

$MachinePrecision gives the number of decimal digits of precision used for machine-precision numbers.

$MessageGroups (Built-in Mathematica Symbol)

$MessageGroups is the list of rules that gives named message groups used in functions like On and Quiet.

Defining Numerical Values (Mathematica Tutorial)

If you make a definition such as f[x_]:=value, Mathematica will use the value you give for any f function it encounters. In some cases, however, you may want to define a ...