| Article ID: | iaor2004392 |
| Country: | United States |
| Volume: | 28 |
| Issue: | 2 |
| Start Page Number: | 309 |
| End Page Number: | 326 |
| Publication Date: | May 2003 |
| Journal: | Mathematics of Operations Research |
| Authors: | Vohra Rakesh V., Sethuraman Jay, Piaw Teo Chung |
We characterize the class of Arrovian Social Welfare Functions (ASWFs) as integer solutions to a collection of linear inequalities. Many of the classical possibility, impossibility, and characterization results can be derived in a simple and unified way from this integer program. Among the new results we derive is a characterization of preference domains that admit a nondictatorial, neutral ASWF. We also give a polyhedral characterization of all ASWFs on single-peaked domains.