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2020•Munich Personal RePEc Archive (Ludwig Maximilian University of Munich)Open access

On the Utility Function Representability of Lexicographic Preferences

Bowen Shi, Gaowang Wang, Zhixiang Zhang

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Abstract

The paper examines the utility function representability of the lexicographic preferences over multiple attributes. A sufficient and necessary condition is provided: a lexicographic preference is utility function representable if and only if there is at most one attribute with uncountable levels and when such an attribute exists, it is the least important one. An auxiliary result of independent interest for general rational preferences is proved stating that the class of utility function representable sets is closed in countable unions under some mild condition.

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The paper examines the utility function representability of the lexicographic preferences over multiple attributes. A sufficient and necessary condition is provided: a lexicographic preference is utility function representable if and only if there is at most one attribute with uncountable levels and when such an attribute exists, it is the least important one. An auxiliary result of independent interest for general rational preferences is proved stating that the class of utility function representable sets is closed in countable unions under some mild condition.

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Available abstract

The paper examines the utility function representability of the lexicographic preferences over multiple attributes. A sufficient and necessary condition is provided: a lexicographic preference is utility function representable if and only if there is at most one attribute with uncountable levels and when such an attribute exists, it is the least important one. An auxiliary result of independent interest for general rational preferences is proved stating that the class of utility function representable sets is closed in countable unions under some mild condition.

Key concepts: Lexicographical order, Uncountable set, Countable set, Function (biology), Preference, Mathematical economics, Mathematics, Class (philosophy)

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