platonic            package:ResistorArray            R Documentation

_A_d_j_a_c_e_n_c_y _o_f _p_l_a_t_o_n_i_c _s_o_l_i_d_s

_D_e_s_c_r_i_p_t_i_o_n:

     Gives the adjacency indices of the five Platonic solids.

_U_s_a_g_e:

     platonic(a)

_A_r_g_u_m_e_n_t_s:

       a: String containing name of one of the five Platonic solids,
          viz "tetrahedron", "cube", "octahedron", "dodecahedron",
          "icosahedron"

_D_e_t_a_i_l_s:

     Returns a two column matrix 'a', the rows of which show the two
     vertices of an edge.  Because resistance is symmetric, only edges
     with 'a[i,1]<i[i,2]' are included.

     For the dodecahedron and icosahedron, the nodes are numbered as
     per Maple's scheme.

_A_u_t_h_o_r(_s):

     Robin K. S. Hankin

_S_e_e _A_l_s_o:

     'cube'

_E_x_a_m_p_l_e_s:

     platonic("octahedron")

