Groups, Graphs and Trees: An Introduction to the Geometry of Infinite GroupsThis outstanding new book presents the modern, geometric approach to group theory, in an accessible and engaging approach to the subject. Topics include group actions, the construction of Cayley graphs, and connections to formal language theory and geometry. Theorems are balanced by specific examples such as Baumslag Solitar groups, the Lamplighter group and Thompson's group. Only exposure to undergraduate level abstract algebra is presumed, and from