Chromatic and achromatic numbers of unitary addition Cayley graphs

Keenan Calhoun, Yeşim Demiroğlu Karabulut, Vincent Pigno +1

Let $R$ be a ring. The unitary addition Cayley graph of $R$, denoted $\mathcal{U}(R)$, is the graph with vertex $R$, and two distinct vertices $x$ and $y$ are adjacent if and only…