The paper studies insurance with moral hazard in a system of contingent-claims markets. Insurance buyers are modelled as Cournot monopolists or oligopolists. The other agents condition their expectations on market prices, as in models of rational-expectations equilibrium with asymmetric...

The paper develops an integrated model of optimal nonlinear income taxation, public-goods provision and pricing in a large economy. With asymmetric information about labour productivities and publicgoods preferences, the multidimensional mechanism design problem becomes tractable by requiring...

The paper discusses the problem of valuation in bank resolution. In an overview over the most relevant principles of valuation theory, the paper notes the difficulties inherent in valuing risks and illiquidity in holding non-traded assets. Subsequently, the paper briefly reviews the resolution...

Der Text beruht auf einer am 9. Mai 2017 vor dem Bundesverfassungsgericht abgegebenen Stellungnahme in der mündlichen Verhandlung zu einem Verfahren über den Umfang der Verpflichtung der Bundesregierung zur Information des Parlaments (Az. 2BvE 2/11). Das Gericht hatte um Auskünfte zur...

Kolmogorov's extension theorem provides a natural mapping from the space of coherent hierarchies of an agent's first-order, second- order, etc. beliefs to the space of probability measures over the exogenous parameters and the other agents' belief hierarchies. Mertens and Zamir (1985) showed...

The paper discusses criteria for comparing risk aversion of decision makers when outcomes are multidimensional. A weak concept, commodity specific greater risk aversion , is based on the comparison of risk premia paid in a specified commodity. A stronger concept, uniformly greater risk aversion...

According to Homburg's (2014) comment on Kim and Lee (1997), an ad-valorem property tax on land cannot cause dynamic ineffi ciency of equilibrium allocations in an overlapping-generations model unless the tax is "confiscatory", i.e., equal to or greater than land rents. With such a tax, Homburg...

The paper contributes to the discussion on whether real interest rates smaller than real growth rates can be taken as evidence of dynamic in- efficiency that calls for scal interventions. A seemingly killing objection points to the presence of land, a non-produced durable asset whose value...