lhs ^= rhs assigns rhs to be the value of lhs, and associates the assignment with symbols that occur at level one in lhs.

Verbatim[expr] represents expr in pattern matching, requiring that expr be matched exactly as it appears, with no substitutions for blanks or other transformations.

VertexEccentricity[g, s] gives the length of the longest shortest path from the source s to every other vertex in the graph g.

VertexLabels is an option and property for Graph and related functions that specifies what labels and label positions should be used for vertices.

$BaseDirectory gives the base directory in which systemwide files to be loaded by Mathematica are conventionally placed.

$UserBaseDirectory gives the base directory in which user-specific files to be loaded by Mathematica are conventionally placed.

When you use //N to get a numerical result, Mathematica does what a standard calculator would do: it gives you a result to a fixed number of significant figures. You can also ...

Here is an expression in full form. TreeForm prints out expressions to show their "tree" structure. You can think of any Mathematica expression as a tree. In the expression ...

On most computer systems, you can execute external programs or commands from within Mathematica. Often you will want to take expressions you have generated in Mathematica, ...

While most built-in Mathematica functions follow the standard evaluation procedure, some important ones do not. For example, most of the Mathematica functions associated with ...