GraphicsGroup[{g_1, g_2, ...}] represents a collection of graphics objects grouped together for purposes of interactive selection in a notebook.
GraphRadius[g] gives the minimum eccentricity of the vertices in the graph g.
GroupElements[group] returns the list of all elements of group.GroupElements[group, {r_1, ..., r_k}] returns the elements numbered r_1, ..., r_k in group in the standard ...
Hash
(Built-in Mathematica Symbol) Hash[expr] gives an integer hash code for the expression expr.Hash[expr, " type"] gives an integer hash code of the specified type for expr.
Hypergeometric0F1Regularized[a, z] is the regularized confluent hypergeometric function \[Null]_0 F_1 (a; z)/\[CapitalGamma](a).
IndependentVertexSetQ[g, vlist] yields True if the vertex list vlist is an independent vertex set in the graph g and False otherwise.
IndexGraph[g] replaces the vertices of the graph g by its vertex indexes. IndexGraph[g, r] replaces the vertices with integers r, r + 1, ....
InexactNumberQ[expr] returns True if expr is an inexact real or complex number, and returns False otherwise.
InverseCDF[dist, q] gives the inverse of the cumulative distribution function for the symbolic distribution dist as a function of the variable q.
InverseJacobiDC[v, m] gives the inverse Jacobi elliptic function dc -1 (v \[VerticalSeparator] m).