the main purpose of this paper is theoretically to design the optimal intervention in the foreign exchange market in iran, which has not been investigated by previous studies. the economic fundamentals are strongly affected by the optimal foreign exchange intervention, the consistency of foreign exchange intervention with other policies and political authorities' beliefs about the interven...

In this paper I study the possibility of full surplus extraction on arbitrary type spaces, with three main results: (i) I characterize full surplus extraction, (ii) I characterize full surplus extraction assuming that the surplus-extracting allocation is implementable, and (iii) I show that virtually full surplus extraction implies full surplus extraction. The characterizing condition in (ii) a...

In both estimation and calibration studies, the notion of ergodicity plays a fundamental role, permitting time series averages to be regarded as approximations to population means. As it turns out, many economic models routinely used for quantitative modeling do not satisfy the classical ergodicity conditions. In this paper we develop a new set of ergodicity conditions orientated towards econom...

This paper solves merger formation problem in Cournot oligopolies by a cooperative and computational approach. In three-firm linear oligopolies, monopoly will be formed (or be stable) if its merging cost is sufficiently low and cost differentials are sufficiently large. When monopoly is unprofitable due to high merging costs, a profitable two-member merger will be formed if its efficient member...

In a model of incomplete, heterogeneous information, with externalities and strategic interactions, we analyze the possibility of adaptive learning to act as coordination device. We build on the framework introduced by Angeletos and Pavan (2007) and extend it to a dynamic setting where agents need to learn to coordinate. We analyze conditions under which learning obtains, and show that adaptive...

We consider one-to-one matching (roommate) problems in which agents (students) can either be matched as pairs or remain single. The aim of this paper is twofold. First, we review a key result for roommate problems (the “lonely wolf” theorem) for which we provide a concise and elementary proof. Second, and related to the title of this paper, we show how the often incompatible concepts of stabili...