Indirect Influences for Graphs

            Algorithms to calculate indirect influences and others for matrices. The
functions given with this package are:
 * influence - Function to calculate the sum of the columns of the influence
matrix.
 * dependence - Function to calculate the sum of the rows of the influence
matrix.
 * polyexpm - Function that returns the exponential matrix of a polynomial
matrix.
 * polylogm - Function that returns the logarithm matrix of a polynomial
matrix.
 * micmac - Function that applies the MICMAC method to a direct influences
matrix.
 * pagerank - Function that applies the PageRank method to a direct influences
matrix.
 * pwp - Function that applies the PWP method to a direct influences matrix.
 * heatkernel - Function that applies the Heat Kernel method to a direct
influences matrix.
 * gpm - Function that generates a permutation matrix.
 * smb - Function that sums the blocks of a squared matrix.
 * pag - Function that calculates the adjcacency matrix of a partition graph for
a given graph.