Graph theory 169 Graph theory-- Mathematics 158 Mathematics 48 Graphs 25 Graph Theory 14 Combinatorial analysis 12 Random graphs 11 Dissertations, Academic (Ph.D) 9 Thesis (Ph.D)-Mathematics 9 Graph algorithms 8 Graphic methods 8 Trees (Graph theory) 8 Algebra 6 Algorithms 6 Directed graphs 6 Computer science 5 Domination (Graph theory) 5 MATHEMATICS / Combinatorics 5 Machine learning 5 Mathematical models 5 Topological graph theory 5 Topology 5 Algebraic topology 4 COMPUTERS / Operating Systems / General 4 Combinatorial optimization 4 Functions 4 Geometry 4 Graph coloring 4 Matrices 4 Computer vision 3