1. Introduction -- 1. Collective decisions and power structure -- 2. Social choice -- 3. Games and game forms -- 4. The effectivity functions of a game form -- 5. Effectivity functions and cooperative games -- 6. An overview of the book -- 7. Notes -- 2. The structure of effectivity functions --...

A contract where the agent is compensated ex post only upon satisfactory performance, often called a no-cureno-pay contract, can arise as under several circumstances. In this paper, we model the problem of contractual choice as a principal-agent contract which is modified due to hidden...

1: One-Good Production and Consumption Models -- 2: Reduced Models -- 3: Efficiency Criteria -- 4: Measures of Curvature and General Efficiency Criteria -- 5: Approximating Sets and Measures of Curvature -- 6: Market Structures and Overlapping Market Economies -- 7: Reduced Many-Goods Models --...

Nowadays many employers offer their employees the possibility of an insurance against too large losses in income when retiring or becoming disabled. This paper models the optimization problem of the employer when setting up such a so-called pension fund. Not surprisingly, it turns out that the...