Toroidal polyhedra Regular map (graph theory)
for example map {6,4}3 can seen {6,4}4,0. following opposite edges traverse 4 hexagons in sequence.
in regular toroidal polyhedra {p,q}b,c can defined if either p or q even, although euclidean ones above can exist toroidal polyhedra in 4-dimensions. in {2p,q}, paths (b,c) can defined stepping face-edge-face in straight lines, while dual {p,2q} forms see paths (b,c) stepping vertex-edge-vertex in straight lines.
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