The Fundamental Theorems of Welfare Economics in a Non-Welfaristic Approach

First Version: September 2001; This Version: January 2002This paper investigates extensions of the two fundamental theorems of welfare economics to the framework in which each agent is endowed with three types of preference relations: an allocation preference relation, an opportunity preference relation, and an overall preference relation. It is shown that, under certain conditions, the two theorems can be extended. It is also pointed out that the conditions underlying the positive results are restrictive.科学研究費補助金（特定領域研究） = Grant-in-Aid for Scientific Research on Priority Areas18 p