k-spaces of non-domain-valued geometric points

Amartya Goswami

https://orcid.org/0000-0003-4829-0847

South Africa

University of Johannesburg image/svg+xml

Department of Mathematics and Applied Mathematics, University of Johannesburg ; National Institute for Theoretical and Computational Sciences (NITheCS)

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Accepted: 2024-03-28

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Published: 2024-10-01

DOI: https://doi.org/10.4995/agt.2024.19887
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Keywords:

geometric point, connectedness, spectral space

Supporting agencies:

This research was not funded

Abstract:

The aim of this paper is to study the topological properties of algebraic sets with zero divisors. We impose a subbasic topology on the set of proper ideals of a k-algebra and this new “k-space” becomes a generalization of the corresponding Zariski space. We prove that a k-space is T0, quasi-compact, spectral, and connected. Moreover, we study continuous maps between such k-spaces. We conclude with a question about the construction of a sheaf of k-spaces similar to affine schemes.

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References:

T. Dube and A. Goswami, Ideal spaces: an extension of structure spaces of a ring, J. Algebra Appl. 22, no. 11 (2023), Paper No. 2350245, 18 pp. https://doi.org/10.1142/S0219498823502456

A. Grothendieck, Éléments de géométrie algébrique I, Springer-Verlag, Berlin, 1971.

D. Harris, Universal quasi-compact $T_{1}$ spaces, General Topology and Appl. 3 (1973), 291-318. https://doi.org/10.1016/0016-660X(73)90018-4

M. Hochster, Prime ideal structure in commutative rings, Trans. Am. Math. Soc. 142 (1969), 43-60. https://doi.org/10.1090/S0002-9947-1969-0251026-X

H. A. Priestley, Intrinsic spectral topologies, in: Papers on general topology and applications (Flushing, NY, 1992), 728, 78-95, New York Acad. Sci., New York, 1994. https://doi.org/10.1111/j.1749-6632.1994.tb44135.x

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