, Volume 32, Issue 2, pp 155-156

The number of ways to label a structure

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access


It has been observed that the number of different ways in which a graph withp points can be labelled isp! divided by the number of symmetries, and that this holds regardless of the species of structure at hand. In this note, a simple group-theoretic proof is provided.

This work was supported by Grant MH 10834 from the National Institute of Mental Health.