Pá 17.03.2023 | 14:00 | Micro Theory Research Seminar

Francesc Dilmé (University of Bonn) "Lexicographic Numbers in Extensive Form Games"

Pá 17.03.2023

Francesc Dilmé (University of Bonn) "Lexicographic Numbers in Extensive Form Games"

Prof. Francesc Dilmé 

University of Bonn, Germany

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Abstract: This paper introduces the space of (lexicographic) ℓ-numbers and uses it to analyze extensive form games. ℓ-Numbers are a simplified, two-dimensional version of the hyperreal numbers, with straightforward operations that make it easy to work with infinitesimal probabilities. We use ℓ-numbers to provide simple characterizations of tremble-based equilibrium concepts, such as sequential equilibria or sequential stable outcomes, without using sequences of strategy profiles.

JEL Classification: C72, C73
Keywords: Lexicographic numbers, sequential equilibrium, stable outcome

Full Text: Lexicographic Numbers in Extensive Form Games