The main objects here are two-stage games in which players first compete and subsequently collaborate. We consider instances where second-stage collaboration is anticipated and sustained in terms of core solutions.

This paper examines how to harvest a biomass exposed to a potential collapse at an uncertain date. A specific recovery effect is identified which may be positive or negative. In general, the effect on the optimal biomass is indeterminate and depends upon the failure rate, the expected collapse,...

We study the residential choice of siblings who are altruistic towards their parents. If some siblings moves further away, he or she can shift some of the burden of takin care for the parents to his or her siblings. Thus, siblings have a strategic incentive to move away that only children do not...

A three-sector model of trade and location where two sectors produce intermediate inputs to the third sector is constructed. One of the intermediate sectors is located in the South and produces a freely traded homogenous input, while the other produces a differentiated input which is traded...

Numerous economic problems assume the form of finding a fixed point of a continuous self-mapping on a compact interval. We consider instances where the mapping is a parametrized expected value, and we offer an iterative scheme for locating a fixed point. The proposed method can be seen as an...

We consider financial contracts that are tradeble in any quantities at fixed prices. A bundle of such contracts constitutes an arbitrage if it offers non-negative payiff in any future state, but commands negative present cost. This note brings together fairly recent results on how to find an...

Sample attrition is a potential source of selection bias in experimental as well as non-experimental programme evaluation. For labour market outcomes such as employment status and earnings, missing data problems caused by attrition can be circumvented by collection of follow-up data from...

I study an evolutionary model of equilibrium selection in supermodular games where players are involved in simultaneous play. This is taken to refer to a context, in contrast with most evolutionary literature, where players' objective is to have their actions match a certain statistic of the...

This paper analyses the design of hospital reimbursement in an industry with imperfect competition, scarcity of labour and socially costly government transfers. We find that prospective payment not only increases the quantity of hospital care, but also the quality if quality improvements are...

In this paper we use a price endogenous mathematical model to estimate the national welfare losses induced by the Norwegian dairy policy. Firstly, we focus on welfare losses at the processing level due to price discrimination between different uses of the milk and cross-subsidization of export....