FindMaxValue[f, x] gives the value at a local maximum of f.FindMaxValue[f, {x, x_0}] gives the value at a local maximum of f, found by a search starting from the point x = ...
FindMinValue[f, x] gives the value at a local minimum of f.FindMinValue[f, {x, x_0}] gives the value at a local minimum of f, found by a search starting from the point x = ...
FindShortestTour[{e_1, e_2, ...}] attempts to find an ordering of the e_i that minimizes the total distance on a tour that visits all the e_i once.
FindVertexCover[g] finds a vertex cover of the graph g with a minimum number of vertices.
FreeQ
(Built-in Mathematica Symbol) FreeQ[expr, form] yields True if no subexpression in expr matches form, and yields False otherwise. FreeQ[expr, form, levelspec] tests only those parts of expr on levels ...
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 ...
GraphComplement[g] gives the graph complement of the graph g.
GraphicsGrid[{{g_11, g_12, ...}, ...}] generates a graphic in which the g_ij are laid out in a two-dimensional grid.
GraphQ
(Built-in Mathematica Symbol) GraphQ[g] yields True if g is a valid Graph object and False otherwise.
GroupMultiplicationTable[group] gives the multiplication table of group as an array.