【学术聚焦▪论坛预告】经济学系双周学术论坛（二十九）

报告摘要

We introduce the notion of a multidimensional hybrid preference domain on a (finite) set of alternatives that is a Cartesian product of finitely many components. We study strategy-proof rules on this domain and show that every such rule can be decomposed into component-wise strategy-proof rules. More importantly, we show that under a suitable "richness'' condition, every domain of preferences that reconciles decomposability of rules with strategy-proofness must be a multidimensional hybrid domain. We finally identify an intuitive weakening of separability that explains how a multidimensional hybrid domain may arise in a public goods provision model.

为了进一步加强对传统优势学科政治经济学、经济史和经济思想史的研究交流，经济学系开展“双周学术论坛”，邀请经济学系和其他系、所、中心师生介绍前沿科研成果，为广大经济学子打造一个高品质的学术交流平台。论坛研讨方向主要突出政治经济学、经济史和经济思想史，兼容发展经济学与应用微观等方向，立足中国大地，讲好中国故事。

The Economics Biweekly Academic Forum is organized by the department of economics in Xiamen University. This forum mainly discusses the topics in the field of political economics, economic history and history of economic thought, with the aim to strengthen the communication between these traditional disciplines and the state of the art in the literature. This forum invites speakers and research students from various departments, which is a high quality platform for academic communication and research discussion. The forum also provides an excellent stage to tell Chinese economics story with precise academic language and Chinese culture.