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Elementary Extensions of Topological Models in $L_{t}$ Language

Mirosław Majewski
Studia Logica: An International Journal for Symbolic Logic
Vol. 46, No. 3 (1987), pp. 255-264
Published by: Springer
Stable URL: http://www.jstor.org/stable/20015316
Page Count: 10
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Elementary Extensions of Topological Models in $L_{t}$ Language
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Abstract

In this paper we define the relation $\prec _{t}$ of elementary extension of topological models in the language $L_{t}$ and show a Back and Forth criterion for $\prec _{t}$. We introduce some new operations on partial homeomorphisms preserving Back and Forth properties. Some properties of $\prec _{t}$ are proved by the Back and Forth technique.

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