On Tameness, Measurability and the Independence Property

Fuente: arXiv
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Main Authors: Krapp, Lothar Sebastian, Vermeil, Matthieu, Wirth, Laura
Format: Preprint
Published: 2025
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author Krapp, Lothar Sebastian
Vermeil, Matthieu
Wirth, Laura
author_facet Krapp, Lothar Sebastian
Vermeil, Matthieu
Wirth, Laura
contents In the area of Tame Geometry, different model-theoretic tameness conditions are established and their relationships are analyzed. We construct a subfield $K$ of the real numbers that lacks several of such tameness properties. As our main result, we present a first-order formula in the language of rings that defines a non-Borel set in $K$. Moreover, $K$ has the independence property and admits both archimedean and non-archimedean orderings.
format Preprint
id arxiv_https___arxiv_org_abs_2506_08733
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle On Tameness, Measurability and the Independence Property
Krapp, Lothar Sebastian
Vermeil, Matthieu
Wirth, Laura
Logic
Primary 03C64, 28A05, Secondary 12L12, 12J15, 03C40, 03C45, 54H05
In the area of Tame Geometry, different model-theoretic tameness conditions are established and their relationships are analyzed. We construct a subfield $K$ of the real numbers that lacks several of such tameness properties. As our main result, we present a first-order formula in the language of rings that defines a non-Borel set in $K$. Moreover, $K$ has the independence property and admits both archimedean and non-archimedean orderings.
title On Tameness, Measurability and the Independence Property
topic Logic
Primary 03C64, 28A05, Secondary 12L12, 12J15, 03C40, 03C45, 54H05
url https://arxiv.org/abs/2506.08733