イノウエ　トモキ   INOUE Tomoki   井上　朋紀    所属   明治大学  政治経済学部    職種   専任講師
言語種別	英語
発行・発表の年月	2008/01
形態種別	学術雑誌
査読	査読あり
標題	Indivisible commodities and the nonemptiness of the weak core
執筆形態	単著
掲載誌名	Journal of Mathematical Economics
巻・号・頁	44(2),pp.96-111
概要	We consider a sufficient condition for the nonemptiness of the weak core in a finite exchange economy where every commodity is available only in integer quantities. We show that if the aggregate upper contour set is discretely convex, then the weak core is nonempty. In addition, we give two sufficient conditions for the aggregate upper contour set to be discretely convex. One is that every upper contour set of every agent is M-natural-convex. The other is that the number of commodities is two and every agent's preference relation is weakly monotone and discretely convex.
DOI	10.1016/j.jmateco.2006.07.009