GraphCenter[g] gives the set of vertices with minimum eccentricity in the graph g.
GraphStyle is an option to Graph and related objects that specifies styles to use for the different graph elements.
GraphUnion[g_1, g_2] gives the graph union of the graphs g_1 and g_2.GraphUnion[g_1, g_2, ...] gives the graph union of g_1, g_2, ....
GroupSetwiseStabilizer[group, {p_1, ..., p_n}] returns the subgroup of group for which the images of the points p_i are still in the list {p_1, ..., p_n}.
HammingDistance[u, v] gives the Hamming distance between strings or vectors u and v.
HarmonicMean[list] gives the harmonic mean of the values in list.
ImageCorrespondingPoints[image_1, image_2] finds a set of matching interest points in image_1 and image_2 and returns their pixel coordinates.
ImagePartition[image, s] partitions an image into an array of s*s-pixel subimages.ImagePartition[image, {w, h}] partitions an image into an array of subimages of pixel width ...
InversePermutation[perm] returns the inverse of permutation perm.
JoinForm[type] is a graphics directive that specifies what type of joins should be used to connect segments of lines, tubes, edges, and related primitives.