Two-sided group digraphs, introduced by Iradmusa and Praeger, provide a generalization of Cayley digraphs in which arcs are determined by left and right multiplying by elements of two subsets of the group. We characterize when two-sided group digraphs are connected and count connected components, using both an explicit elementary perspective and group actions. Our results and examples address four open problems posed by Iradmusa and Praeger that concern connectedness and valency. 查看全文>>