$GeoLocation (Built-in Mathematica Symbol)

$GeoLocation is a settable global variable that specifies the default geodetic location to use.

$MaxExtraPrecision (Built-in Mathematica Symbol)

$MaxExtraPrecision gives the maximum number of extra digits of precision to be used in functions such as N.

$OperatingSystem (Built-in Mathematica Symbol)

$OperatingSystem is a string giving the type of operating system under which Mathematica is being run.

$Packages (Built-in Mathematica Symbol)

$Packages gives a list of the contexts corresponding to all packages which have been loaded in your current Mathematica session.

$ProcessorType (Built-in Mathematica Symbol)

$ProcessorType is a string giving the architecture of the processor on which Mathematica is being run.

$SystemCharacterEncoding (Built-in Mathematica Symbol)

$SystemCharacterEncoding gives the default raw character encoding for the computer system on which Mathematica is being run.

Configuration Files for Mathematica (Mathematica Tutorial)

Mathematica stores preference settings and initialization data in two directories, $BaseDirectory and $UserBaseDirectory. Within each of these directories are several ...

Controlling the Precision of Results (Mathematica Tutorial)

In doing numerical operations like NDSolve and NMinimize, Mathematica by default uses machine numbers. But by setting the option WorkingPrecision->n you can tell it to use ...

Defining Output Formats (Mathematica Tutorial)

Just as Mathematica allows you to define how expressions should be evaluated, so also it allows you to define how expressions should be formatted for output. The basic idea ...

Naming Conventions (Mathematica Tutorial)

Mathematical functions in Mathematica are given names according to definite rules. As with most Mathematica functions, the names are usually complete English words, fully ...