DirectedGraphQ[g] yields True if the graph g is a directed graph and False otherwise.

DiskMatrix[r] gives a matrix whose elements are 1 in a disk-shaped region of radius r, and are otherwise 0.DiskMatrix[r, w] gives a w*w matrix containing a disk of 1s with ...

DistributedContexts is an option for various parallel computing functions that specifies which definitions for symbols appearing in an expression should be distributed to all ...

Divisible[n, m] yields True if n is divisible by m, and yields False if it is not.

Evaluate[expr] causes expr to be evaluated even if it appears as the argument of a function whose attributes specify that it should be held unevaluated.

FaceForm[g] is a graphics directive which specifies that faces of polygons and other filled graphics objects are to be drawn using the graphics directive or list of ...

Find[stream, " text"] finds the first line in an input stream that contains the specified string. Find[stream, {"text_1", "text_2", ...}] finds the first line that contains ...

FromDigits[list] constructs an integer from the list of its decimal digits. FromDigits[list, b] takes the digits to be given in base b. FromDigits["string"] constructs an ...

GraphQ[g] yields True if g is a valid Graph object and False otherwise.

GroupElementPosition[group, g] returns the position of the element g in the list of elements of group.GroupElementPosition[group, {g_1, ..., g_n}] returns the list of ...