Weak System Models for Distributed Agreement Problems

The book delves into theoretical frameworks for tackling agreement issues within fault-tolerant distributed computing systems. It emphasizes the importance of selecting appropriate system models, balancing between too restrictive and overly relaxed assumptions. The first part introduces the context and literature, while the second part presents the Asynchronous Bounded-Cycle model, effective in achieving consensus amidst Byzantine faults. The final section offers a comprehensive exploration of algorithms and models designed to solve the k-set agreement problem, where processes must converge on a maximum of k distinct values.