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Conference Papers Year : 2005

Hybrid Definability in Topological Spaces

Abstract

We present some results concerning the definability of classes of topological spaces in hybrid languages. We use the language $L_t$ described in Flum and Ziegler's monograph "Topogical Model Theory" to establish the notion of "elementarity'' for classes of topological spaces. We use it to prove the analogue of the Goldblatt-Thomason theorem in topological spaces for hybrid languages $H(E)$ and $H(@)$. We also prove a theorem that allows us to reformulate the definability result of Gabelaia (given in his Mater's thesis) for modal logic in terms of elementary topological space classes.
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Dates and versions

inria-00001207 , version 1 (05-04-2006)

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  • HAL Id : inria-00001207 , version 1

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Dmitry Sustretov. Hybrid Definability in Topological Spaces. 17th European Summer School in Logic, Language and Information - ESSLLI'05, Aug 2005, Edimbourg/Grande Bretagne. ⟨inria-00001207⟩
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