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Lexicographic preference representation: Intrinsic length of linear orders on infinite sets

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  • Knoblauch, Vicki

Abstract

The intrinsic length of a linear order is the minimum of all ordinals δ such that there is a binary-criteria lexicographic representation of the linear order in {0,1}δ. Assuming the Generalized Continuum Hypothesis, we show that, for each ordinal γ and infinite set X with cardinality κ, there exist a linear order on X such that γ is the intrinsic length of that linear order if and only if logκ≤γ≤κ. This intrinsic-length partition imposes a structure on the profusion of linear orders on an infinite set.

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  • Knoblauch, Vicki, 2023. "Lexicographic preference representation: Intrinsic length of linear orders on infinite sets," Journal of Mathematical Economics, Elsevier, vol. 105(C).
    • Handle: RePEc:eee:mateco:v:105:y:2023:i:c:s0304406823000162
    DOI: 10.1016/j.jmateco.2023.102823
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    References listed on IDEAS

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    1. Knoblauch, Vicki, 2022. "The lexicographic complexity of asymmetric binary relations," Mathematical Social Sciences, Elsevier, vol. 117(C), pages 6-12.
    2. Houy, Nicolas & Tadenuma, Koichi, 2009. "Lexicographic compositions of multiple criteria for decision making," Journal of Economic Theory, Elsevier, vol. 144(4), pages 1770-1782, July.
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    7. Caserta, A. & Giarlotta, A. & Watson, S., 2008. "Debreu-like properties of utility representations," Journal of Mathematical Economics, Elsevier, vol. 44(11), pages 1161-1179, December.
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