We study subgroups G of GL n, R definable in o-minimal expansions M s Ž . Ž. R, q, и , . . . of a real closed field R. We prove several results such as: a G can be defined using just the field structure on R together with, if necessary, power Ž . functions, or an exponential function definable in M.
Rings of analytic functions definable in o-minimal structure
✍ Scribed by M. Fujita; M. Shiota
- Publisher
- Elsevier Science
- Year
- 2003
- Tongue
- English
- Weight
- 370 KB
- Volume
- 182
- Category
- Article
- ISSN
- 0022-4049
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✦ Synopsis
From the ring theoretical viewpoint, especially from the viewpoint of Real Algebra, we consider the ring of analytic functions deÿnable in a given o-minimal expansion of the real ÿeld on a deÿnable real analytic manifold. We ÿnd necessary conditions for o-minimal structures that Artin-Lang property, Real Nullstellensatz and Hilbert 17th Problem for this ring hold true in the three-dimensional case. We also prove that this ring is Noetherian in the three-dimensional case when the given o-minimal structure is the restricted analytic ÿeld.
📜 SIMILAR VOLUMES
## Abstract In this note we show: Let __R__ = 〈__R__, <, +, 0, …〉 be a semi‐bounded (respectively, linear) o‐minimal expansion of an ordered group, and __G__ a group definable in __R__ of linear dimension __m__ ([2]). Then __G__ is a definable extension of a bounded (respectively, definably compact