Euler Characteristic Formula: , where is the number of vertices, is the number of edges, and is the number of faces.
Genus Formula: , where is the genus.
Equation 1. For each , .
Equation 2. For , where is an even integer, .
Equation 3. For , where is an odd integer, .
Equation 4. Let be the order of the sum of the elements in . The total number of edges, , of the face produced by is .
Equation 5. The number of occurrences, , of each face is , where is the order of the sum of the elements in .
Equation 6. The number of darts, , in is .