In Deutschland wird die Aufsicht über die Banken arbeitsteilig von der Bundesanstalt für Finanzdienstleistungsaufsicht und der Deutschen Bundesbank durchgeführt, wobei sie vor allem an die Vorgaben des Kreditwesengesetzes gebunden ist. Die Finanzkrise, die im Sommer 2007 ihren Anfang nahm,...

This paper studies the relation between Bayesian mechanism de- sign and the Ramsey-Boiteux approach to the provision and pricing of excludable public goods. For a large economy with private informa- tion about individual preferences, the two approaches are shown to be equivalent if and only if,...

The paper provides a new formulation of the Mirrlees-Seade theo- rem on the positivity of the optimal marginal income tax, under weaker assumptions and in a more general model. The formulation of the the- orem is independent of whether the model involves finitely many types or a continuous type...

The paper studies outside finance in a model of two-dimensional moral hazard, involving risk choices as well as effort choices. If the entrepreneur has insu¢ cient funds, a first-best outcome cannot be implemented. Second-best outcomes involve greater failure risk than first-best outcomes. For...

The paper develops a version of Pontryagin's maximum principle for optimal control problems with monotonicity constraints on control variables. Whereas the literature handles such constraints by imposing an assumption of piecewise smoothness on the control variable and treating the slope of this...