Vertex matrices are graphs showing interconnected concepts or data. These graphs can take a variety of shapes from traditional rows and columns of information to floating bubbles of conceptual ...

Graph databases explicitly express the connections between nodes, and are more efficient at the analysis of networks (computer, human, geographic, or otherwise) than relational databases. There has ...

We consider the number of vertex independent sets i(G). In general, the problem of determining the value of i(G) is NP-complete. We present several upper and lower bounds for i(G) in terms of order, ...