The graph on the left is two stars of three vertices each, and the graph on the right is three stars of two vertices each. Even the graph with no edges can be thought of as six stars of one vertex ...

Department of Mathematics Western Michigan University Kalamazoo MI 49008-5248 USA (269) 387-4510. Graph Theory Seminar . Upcoming Events Apr ... Hajiaghayi, Kleinberg and Leighton generalized the ...

It also has direct and crucial implications for a branch of mathematics known as graph theory. These graphs consist of collections of points, or vertices, that may (or may not) be connected to each ...