Graph theory 40 Hamiltonian graph theory 5 Directed graphs 4 Combinatorial analysis 3 Polynomials 3 Trees (Graph theory) 3 Algorithms 2 Bipartite graphs 2 Dissertations 2 Dissertations, Academic 2 Finite groups 2 Graphic methods 2 Mathematical models 2 Mathematics 2 Number theory 2 Abelian groups 1 Administration 1 Bit-mapped graphics 1 C (Computer program language) 1 Cayley algebras 1 Cayley graphs 1 Chromatic polynomials 1 Coding theory 1 D-graphs 1 Data Processing 1 Data processing 1 Electronic data processing 1 Genetic algorithms 1 Graph coloring 1 Group theory 1