platonic: Adjacency of platonic solids
In ResistorArray: Electrical Properties of Resistor Networks

Description Usage Arguments Details Author(s) See Also Examples

Gives the adjacency indices of the five Platonic solids.

1	platonic(a)

`a`	String containing name of one of the five Platonic solids, viz “tetrahedron”, “cube”, “octahedron”, “dodecahedron”, “icosahedron”

Returns a two column matrix a, the rows of which show the two vertices of an edge. 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.

Robin K. S. Hankin

cube

1	platonic("octahedron")

      [,1] [,2]
 [1,]    1    2
 [2,]    1    3
 [3,]    1    4
 [4,]    1    5
 [5,]    2    3
 [6,]    2    5
 [7,]    2    6
 [8,]    3    4
 [9,]    3    6
[10,]    4    5
[11,]    4    6
[12,]    5    6