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Definably extending partial orders in totally ordered structures
Authors:Janak Ramakrishnan  Charles Steinhorn
Institution:1. Google Inc., 76 9th Ave, , New York, NY 10011 United States of America;2. Department of Mathematics, Vassar College, , Poughkeepsie, 12604 NY United States of America
Abstract:We show, for various classes of totally ordered structures urn:x-wiley:09425616:malq201300047:equation:malq201300047-math-0001, including o‐minimal and weakly o‐minimal structures, that every definable partial order on a subset of urn:x-wiley:09425616:malq201300047:equation:malq201300047-math-0002 extends definably in urn:x-wiley:09425616:malq201300047:equation:malq201300047-math-0003 to a total order. This extends the result proved in 5 for urn:x-wiley:09425616:malq201300047:equation:malq201300047-math-0004 and urn:x-wiley:09425616:malq201300047:equation:malq201300047-math-0005 o‐minimal.
Keywords:
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