Reconstructing an Open Order from Its Closure, with Applications to Space-Time Physics and to Logic |
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Authors: | Francisco Zapata Vladik Kreinovich |
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Affiliation: | 1. Department of Computer Science, University of Texas at El Paso, 500 W. University, El Paso, TX, 79968, USA
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Abstract: | In his logical papers, Leo Esakia studied corresponding ordered topological spaces and order-preserving mappings. Similar spaces and mappings appear in many other application areas such the analysis of causality in space-time. It is known that under reasonable conditions, both the topology and the original order relation ${preccurlyeq}$ can be uniquely reconstructed if we know the “interior” ${prec}$ of the order relation. It is also known that in some cases, we can uniquely reconstruct ${prec}$ (and hence, topology) from ${preccurlyeq}$ . In this paper, we show that, in general, under reasonable conditions, the open order ${prec}$ (and hence, the corresponding topology) can be uniquely determined from its closure ${preccurlyeq}$ . |
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