Group theory 16 Combinatorial group theory 7 Dissertations 6 Dissertations, Academic 6 Finite groups 4 Mathematics 3 Abelian groups 2 Free products (Group theory) 2 Group extensions (Mathematics) 2 Presentations of groups (Mathematics) 2 Semigroups 2 Algebra 1 Combinatorial analysia 1 Combinatorial analysis 1 Conjugacy classes 1 Curricula 1 Difference sets 1 Early childhood education 1 Early childhood teachers 1 Geometric group theory 1 Group schemes (Mathematics) 1 Groups of divisibility 1 H-functions 1 HNN-extensions 1 Hamiltonian graph theory 1 Homotopy theory 1 Lie algebras 1 Lie groups 1 Localization theory 1 Mathematical models 1