The constructible topology on spaces of valuation domains
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- by Carmelo A. Finocchiaro, Marco Fontana and K. Alan Loper PDF
- Trans. Amer. Math. Soc. 365 (2013), 6199-6216 Request permission
Abstract:
We consider properties and applications of a compact, Hausdorff topology called the “ultrafilter topology” defined on an arbitrary spectral space and we observe that this topology coincides with the constructible topology. If $K$ is a field and $A$ a subring of $K$, we show that the space $\operatorname {Zar}(K|A)$ of all valuation domains, having $K$ as the quotient field and containing $A$, (endowed with the Zariski topology) is a spectral space by giving in this general setting the explicit construction of a ring whose Zariski spectrum is homeomorphic to $\operatorname {Zar}(K|A)$. We extend results regarding spectral topologies on the spaces of all valuation domains and apply the theory developed to study representations of integrally closed domains as intersections of valuation overrings. As a very particular case, we prove that two collections of valuation domains of $K$ with the same ultrafilter closure represent, as an intersection, the same integrally closed domain.References
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Additional Information
- Carmelo A. Finocchiaro
- Affiliation: Dipartimento di Matematica, Università degli Studi “Roma Tre”, Largo San Leonardo Murialdo, 1, 00146 Rome, Italy
- Email: carmelo@mat.uniroma3.it
- Marco Fontana
- Affiliation: Dipartimento di Matematica, Università degli Studi “Roma Tre”, Largo San Leonardo Murialdo, 1, 00146 Rome, Italy
- Email: fontana@mat.uniroma3.it
- K. Alan Loper
- Affiliation: Department of Mathematics, Ohio State University, Newark, Ohio 43055
- Email: lopera@math.ohio-state.edu
- Received by editor(s): October 7, 2010
- Received by editor(s) in revised form: March 29, 2011, and August 11, 2011
- Published electronically: March 25, 2013
- Additional Notes: During the preparation of this paper, the first two authors were partially supported by a research grant PRIN-MiUR
- © Copyright 2013
American Mathematical Society
The copyright for this article reverts to public domain 28 years after publication. - Journal: Trans. Amer. Math. Soc. 365 (2013), 6199-6216
- MSC (2010): Primary 13A18, 13F05, 13G05
- DOI: https://doi.org/10.1090/S0002-9947-2013-05741-8
- MathSciNet review: 3105748