Regular sets in Cayley sum graphs on generalized dicyclic groups

Meiqi Peng, Yuefeng Yang

For a graph $\hat{I}“=(V(\hat{I}“),E(\hat{I}“))$, a subset $C$ of $V(\hat{I}“)$ is called an $(\hat{I}\pm ,{\hat{I}}^2)$-regular set in $\hat{I}“$, if every vertex of $C$ is adjacent to exactly $\hat{I}\pm$ vertices of $C$ and every ver…