Recently, Mankiw-Whinston (1986) and Suzumura-Kiyono (1987) have shown that socially excessive firm entry occurs in unregulated oligopoly. This paper extends this "excess entry" results by looking into strategic aspects of cost-reducing R&D investment that creates incentives towards socially...

The authors analyze the problem in which agents have nonpublic information and are to play an asymmetric information game. The agents may reveal some or all of their information to other agents prior to playing this game. Revelation is via exogenously specified certifiable statements. The...

This paper proposes a new conceptual framework of a liberal social order, which emphasizes the freedom of action in social interaction and the freedom of participation in social rule-making process. Our articulation of public decision-making process can be interpreted as a formal way of...

Since Sen's contribution on the impossibility of a Paretian liberal, his formulation of libertarian rights has been under debate. In this paper, we highlight some important strands in this debate, and achieve some conceptual clarification of the different and often incompatible views of...

Two features of Arrow's social choice theory are critically scrutinized. The first feature is the welfarist-consequentialism, which not only bases social judgements about right or wrong actions on the assessment of their consequences, but also assesses consequences in terms of people's welfare...