The aim of the book is to present the state of the art of the theory of symmetric (Hermitian) matrix Riccati equations and to contribute to the development of the theory of non-symmetric Riccati equations as well as to certain classes of coupled and generalized Riccati equations occurring in differential games and stochastic control. The volume offers a complete treatment of generalized and coupled Riccati equations. It deals with differential, discrete-time, algebraic or periodic symmetric and non-symmetric equations, with special emphasis on those equations appearing in control and systems theory. Extensions to Riccati theory allow to tackle robust control problems in a unified approach.

The book is intended to make available classical and recent results to engineers and mathematicians alike. It is accessible to graduate students in mathematics, applied mathematics, control engineering, physics or economics. Researchers working in any of the fields where Riccati equations are used can find the main results with the proper mathematical background.

The aim of the book is to present the state of the art of the theory of symmetric (Hermitian) matrix Riccati equations and to contribute to the development of the theory of non-symmetric Riccati equations as well as to certain classes of coupled and generalized Riccati equations occurring in differential games and stochastic control. The volume offers a complete treatment of generalized and coupled Riccati equations. It deals with differential, discrete-time, algebraic or periodic symmetric and non-symmetric equations, with special emphasis on those equations appearing in control and systems theory. Extensions to Riccati theory allow to tackle robust control problems in a unified approach.

The book is intended to make available classical and recent results to engineers and mathematicians alike. It is accessible to graduate students in mathematics, applied mathematics, control engineering, physics or economics. Researchers working in any of the fields where Riccati equations are used can find the main results with the proper mathematical background.

In der Renten- und Arbeitsmarktpolitik hat ein Paradigmenwechsel eingesetzt, der auf eine langere Erwerbstatigkeit zielt. Dieser Band beschreibt die Entwicklung der Alterserwerbstatigkeit in den letzten 10 Jahren und analysiert die Bedingungen fur den Zeitpunkt des Erwerbsaustritts von alteren Erwerbstatigen. In die Untersuchung wird ein breites Spektrum von Einflussfaktoren einbezogen, das von den institutionellen Rahmenbedingungen uber individuelle Entscheidungen im Hauhaltskontext, den Arbeitsbedingungen und betrieblicher Personalstrategien bis hin zur Arbeitsmarktpolitik reicht. Die Ergebnisse zeigen, dass die soziale Sicherung im Ruhestand starker als bisher auf einer langen Erwerbsphase beruhen wird.