The g-extraconnectivity of G is the minimum cardinality of a set of vertices of G , if it exists, whose deletion disconnects G , and where every remaining component has more than g vertices.Expand

Let D = (V(D), A(D)) be a digraph, x, y, z be three variables taking values − or +, and D xyz denote the transformation digraphs of D. In this article, we determine the spectra of seven… Expand