Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/323217 
Year of Publication: 
2025
Series/Report no.: 
KIT Working Paper Series in Economics No. 172
Publisher: 
Karlsruher Institut für Technologie (KIT), Institut für Volkswirtschaftslehre (ECON), Karlsruhe
Abstract: 
We study the aggregation of partial orders into a complete ordering, and prove both possibility and impossibility results in this context. First, we show that the standard independence of irrelevant alternatives condition is stronger here since even dictatorial aggregation rules may fail to satisfy it. On the other hand, domain restrictions enable non-dictatorial aggregation rules satisfying a number of attractive properties. In particular, we show that anonymous aggregation satisfying a weak form of independence of irrelevant alternatives is possible on a large class of 'extended' Condorcet domains.
Subjects: 
Multi-criteria decision making
aggregation of partial orders and incomplete lists
Arrow's theorem
JEL: 
D71
Document Type: 
Working Paper

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