Contributions to the theory of evolution and congestion games.

Summary This thesis is contributed to evolutionary games and congestion games. After a survey of the studies on network congestion games in Chapter 1, Chapters 2 and 3 consider the relation between the composition of the players (nonatomic, atomic, composite) and the equilibrium cost. In particular, the impact of the formation of coalitions is examined. Chapters 4 and 5 introduce the behavior of delegation in composite games and integer-splittable games. Several delegation games and a delegation process are defined and studied in different contexts. Finally, dynamic aspects in games are considered. Chapter 6 focuses on a two-level dynamics which models the phenomenon of multilevel selection. The thesis is concluded by a survey of the studies on the dynamics of replicator type in Chapter 7.