This book discusses the main shortcomings of the classical solution concept from noncooperative game theory and provides a comprehensive study of the more refined concepts that have been introduced to overcome these drawbacks. The plausibility of the assumptions underlying each such concept are discussed, desirable properties as well as deficiencies are illustrated, characterizations are derived and the relationships between the various concepts are studied. The first six chapters provide an informal discussion with many examples as well as a comprehensive overview (...) for normal form games. The remaining chapters are devoted to specific applications, illustrating the strength of the various concepts. (shrink)