$Linked is True if the Mathematica kernel is being run through MathLink.

$PathnameSeparator is a string used as a separator when full file and directory names are constructed.

$SoundDisplayFunction gives the default setting for the option DisplayFunction in sound functions.

When you do calculations with arbitrary-precision numbers, Mathematica keeps track of precision at all points. In general, Mathematica tries to give you results which have ...

Here is one way to enter a particular expression. Here is another way to enter the same expression. With a notebook front end, you can also enter the expression directly in ...

There are many situations where you want to write a particular algebraic expression in the simplest possible form. Although it is difficult to know exactly what one means in ...

If you use your computer via a purely graphical interface, you will typically double-click the Mathematica icon to start Mathematica. If you use your computer via a textually ...

GeodesyData["name", " property"] gives the value of the specified property for a named geodetic datum or reference ellipsoid.GeodesyData[{a, b}, " property"] gives the value ...

ParallelDo[expr, {i_max}] evaluates expr in parallel i_max times. ParallelDo[expr, {i, i_max}] evaluates expr in parallel with the variable i successively taking on the ...

Like other objects in Mathematica, the cells in a notebook, and in fact the whole notebook itself, are all ultimately represented as Mathematica expressions. With the ...