Munich Personal RePEc Archive

The existence of equilibrium in a simple exchange model

Maćkowiak, Piotr (2013): The existence of equilibrium in a simple exchange model. Published in: Fixed Point Theory and Applications No. 2013:104 doi:10.1186/1687-1812-2013-104 (April 2013)

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This paper gives a new proof of the existence of equilibrium in a simple model of an exchange economy. We first formulate and prove a simple combinatorial lemma and then we use it to prove the existence of equilibrium. The combinatorial lemma allows us to derive an algorithm for the computation of equilibria. Though the existence theorem is formulated for functions defined on open simplices it is equivalent to the Brouwer fixed point theorem.

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