https://revistas.javeriana.edu.co./index.php/scientarium/issue/feed Universitas Scientiarum 2024-05-08T00:00:00-05:00 Angela Jhoana Espejo Mojica editorus@javeriana.edu.co Open Journal Systems <p><strong>Universitas Scientiarum:</strong> (ISSN: 0122-7483; E-ISSN: 2027-1352) is a multidisciplinary, Open-Acces, peer-reviewed, first-online journal devoted to the promotion of the recent progress in all fields of exact and natural sciences. The objective of Universitas Scientiarum is to publish timely (three times per year: April, August, and December), useful and informative results that will be of value to a general audience. All articles published in Universitas Scientiarum have undergone rigorous peer review by at least two international anonymous referees. Universitas Scientiarum was founded in 1987 by the Faculty of Sciences of the Pontificia Universidad Javeriana, Bogotá D.C., Colombia.</p> https://revistas.javeriana.edu.co./index.php/scientarium/article/view/37750 The Avoidance Spectrum of Alexandroff Spaces 2023-07-28T18:13:25-05:00 Luis Mejias lfmejias@espol.edu.ec Jorge Enrique Vielma jevielma@espol.edu.ec <p>In this paper we prove that every T0 Alexandroff topological space (X, τ ) is homeomorphic to the avoidance of a subspace of (Spec(Λ), τ<sub>Z</sub>), where Spec(Λ) denotes the prime spectrum of a semi-ring Λ induced by τ and τ<sub>Z</sub> is the Zariski topology. We also prove that (Spec(Λ), τ<sub>Z</sub>) is an Alexandroff space if and only if Λ satisfies the Gilmer property.</p> 2024-05-04T00:00:00-05:00 Copyright (c) 2024 Luis Mejias, Jorge Enrique Vielma