The brave fans of Richard Dean Anderson (known to Gaters as Col. Jack O’Neill) are attempting to map out every single Stargate story arc in the 10 seasons Stargate SG-1 was on the air.

In this paper, a characterisation is given of finite s-arc transitive Cayley graphs with s ≥ 2. In particular, it is shown that, for any given integer k with k ≥ 3 and k ≠ 7, there exists a finite set ...