EconPapers    
Economics at your fingertips  
 

Inequality in the Age of Pseudonymity

Aviv Yaish, Nir Chemaya, Lin William Cong and Dahlia Malkhi

Papers from arXiv.org

Abstract: Inequality measures such as the Gini coefficient are used to inform and motivate policymaking, and are increasingly applied to digital platforms. We analyze how measures fare in pseudonymous settings that are common in the digital age. One key challenge of such environments is the ability of actors to create fake identities under fictitious false names, also known as ``Sybils.'' While some actors may do so to preserve their privacy, we show that this can inadvertently hamper inequality measurements. As we prove, it is impossible for measures satisfying the literature's canonical set of desired properties to assess the inequality of an economy that may harbor Sybils. We characterize the class of all Sybil-proof measures, and prove that they must satisfy relaxed version of the aforementioned properties. Furthermore, we show that the structure imposed restricts the ability to assess inequality at a fine-grained level. By applying our results, we prove that large classes of popular measures are not Sybil-proof, with the famous Gini coefficient being but one example out of many. Finally, we examine the dynamics leading to the creation of Sybils in digital and traditional settings.

Date: 2025-08, Revised 2025-08
References: View complete reference list from CitEc
Citations:

Downloads: (external link)
http://arxiv.org/pdf/2508.04668 Latest version (application/pdf)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:arx:papers:2508.04668

Access Statistics for this paper

More papers in Papers from arXiv.org
Bibliographic data for series maintained by arXiv administrators ().

 
Page updated 2025-10-04
Handle: RePEc:arx:papers:2508.04668