Nomenclature according to Wells

This notation can be extended to include nets with more than one type of node and ring. In the general form this would be  

To describe more complex nets, a different nomenclature can be used. In this case, also according to Wells, a set of numbers is assigned to each type of node in a net. These are in the form A . B 2.C 3... where the letters A, B, C... are the size of the smallest circuit originating from that node. The circuits should be ordered as A B C. The superscripts X, X2... are the number of circuits (of type A, B, C...) at the node. Although the connectivity of the node, p, is not included, it can be deduced from the sum of the superscripts  

The total number of cireuits to eount is determined by all the possible link pairs that can be formed at the node. For example, a 3-connected node with the links a, b and c has 3 pairs ab, be, and ac, and in the general case the number of linked pairs is equal to / (p-l)/2 as in equation 4.1 and the connectivity p is given by equation 4.2. 

Although the Schlafli symbol gives somewhat more information, both types of notation result in there being more than one net with the same set of numbers. The added letter in Wells notation does of course take care of this, but new nets are hard to designate since there is no central committee handing out extra letters. 

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