Abstract
I give short and constructive proofs of Tarski’s fixed-point theorem, and of Zhou’s extension of Tarski’s fixed-point theorem to set-valued maps.
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I thank Charles Blair, William Thomson, an associated editor and a referee for their helpful suggestions.
I have taught Tarski’s Theorem with F continuous to Caltech undergraduates.
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Echenique, F. A short and constructive proof of Tarski’s fixed-point theorem. Int J Game Theory 33, 215–218 (2005). https://doi.org/10.1007/s001820400192
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DOI: https://doi.org/10.1007/s001820400192