Readership

Graduate students and research mathematicians interested in group theory and generalizations.

Table of Contents

• Introduction
• Graphs of groups, tree actions and edge-indexed graphs
• \(Aut(X)\) and its discrete subgroups
• Existence of tree lattices
• Non-uniform coverings of indexed graphs with an arithmetic bridge
• Non-uniform coverings of indexed graphs with a separating edge
• Non-uniform coverings of indexed graphs with a ramified loop
• Eliminating multiple edges
• Existence of arithmetic bridges
• Bibliography