VertexDelete[g, v] makes a graph by deleting the vertex \[Nu] and all edges connected to v from the graph g.VertexDelete[g, {v_1, v_2, ...}] deletes a collection of vertices ...

VertexInComponent[g, {v_1, v_2, ...}] gives the vertices in the graph g that have a directed path to at least one of v_1, v_2, ....VertexInComponent[g, {v_1, v_2, ...}, k] ...

Testing for numeric quantities. Pi is a symbol, so Pi+3 is not explicitly a number. It does however have a numerical value.

Specifying patterns that involve alternatives. This defines h to give p when its argument is either a or b. The first two cases give p.

Expressions corresponding to cells. Here is a notebook containing a text cell and a Mathematica input cell. Here are the expressions corresponding to these cells.

$OpenCLDevice is a device used throughout OpenCLLink's computation.

$OpenCLPlatform is a platform used throughout OpenCLLink's computation.

VectorScale is an option to VectorPlot, ListVectorPlot, and related functions that determines the length and arrowhead size of field vectors that are drawn.

Mathematica provides various options for labeling three-dimensional graphics. Some of these options are directly analogous to those for two-dimensional graphics, discussed in ...

You can enhance the appearance of 3D graphics in Mathematica by changing the direction and color of plot lighting. Lighting , an option for Graphics3D and related functions, ...