$DistributedContexts (Built-in Mathematica Symbol)

$DistributedContexts is the default value of the DistributedContexts option of functions such as ParallelTable and ParallelMap.

$MachinePrecision (Built-in Mathematica Symbol)

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

$MinPrecision (Built-in Mathematica Symbol)

$MinPrecision gives the minimum number of digits of precision to be allowed in arbitrary-precision numbers.

$TimeZone (Built-in Mathematica Symbol)

$TimeZone gives the current time zone to assume for dates and times.

Evaluation in Iteration Functions (Mathematica Tutorial)

The built-in Mathematica iteration functions such as Table and Sum evaluate their arguments in a slightly special way. When evaluating an expression like Table[f,{i,i_max}], ...

Indeterminate and Infinite Results (Mathematica Tutorial)

If you type in an expression like 0/0, Mathematica prints a message, and returns the result Indeterminate. An expression like 0/0 is an example of an indeterminate numerical ...

Installing Existing MathLink-Compatible ... (Mathematica Tutorial)

One of the most common uses of MathLink is to allow you to call functions in an external program from within Mathematica. Once the external program has been set up, all you ...

Resizing, Cropping, and Adding Margins ... (Mathematica Tutorial)

The following sequence shows how to change the aspect ratio of a plot. Using the Selection tool, click to select the graphic. Shift+drag a handle to change the aspect ratio.

Reshaping Graphics Objects (Mathematica Tutorial)

In this tutorial, the following topics are discussed: The following sequence explains how to use the Reshape tool ( GraphicsBox[RasterBox[CompressedData[ ], {Offset[{0.5, ...

Modules and Local Variables (Mathematica Tutorial)

Mathematica normally assumes that all your variables are global. This means that every time you use a name like x, Mathematica normally assumes that you are referring to the ...