Results 41 to 50 of about 365 (176)

The Fixed Point Property of the Infinite M-Sphere

open access: yesMathematics, 2020
The present paper is concerned with the Alexandroff one point compactification of the Marcus-Wyse (M-, for brevity) topological space ( Z 2 , γ ) . This compactification is called the infinite M-topological sphere and denoted by ( ( Z
Sang-Eon Han, Selma Özçağ
doaj   +1 more source

Dimensions of the type dim and Alexandroff spaces

open access: yesJournal of the Egyptian Mathematical Society, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Georgiou, D.N.   +2 more
openaire   +2 more sources

The compactificability classes: The behavior at infinity

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2006
We study the behavior of certain spaces and their compactificability classes at infinity. Among other results we show that every noncompact, locally compact, second countable Hausdorff space X such that each neighborhood of infinity (in the Alexandroff ...
Martin Maria Kovár
doaj   +1 more source

Cofinitely and co-countably projective spaces

open access: yesApplied General Topology, 2002
We show that X is cofinitely projective if and only if it is a finite union of Alexandroff compactatifications of discrete spaces. We also prove that X is co-countably projective if and only if X admits no disjoint infinite family of uncountable cozero ...
Pablo Mendoza Iturralde   +1 more
doaj   +1 more source

Alexandroff and Scott Topologies for Generalized Metric Spaces [PDF]

open access: yesAnnals of the New York Academy of Sciences, 1996
ABSTRACT:Generalized metric spaces are a common generalization of preorders and ordinary metric spaces. Every generalized metric space can be isometrically embedded in a complete function space by means of a metric version of the categoricalYoneda embedding. This simple fact gives naturally rise to: 1. a topology for generalized metric spaces which for
M.M. Bonsangue (Marcello)   +2 more
openaire   +2 more sources

Revisiting International Political Leadership: Nordic Leadership in Informal Intergovernmental Climate Organisations

open access: yesGlobal Policy, Volume 17, Issue 2, Page 178-188, May 2026.
ABSTRACT The growing significance of informal intergovernmental organisations (IIGOs) in global politics necessitates a re‐evaluation of leadership dynamics. We develop a theory framework that enables us to explain why countries take on leadership roles in IIGOs, with a specific focus on climate politics.
Christin Heinz‐Fischer   +1 more
wiley   +1 more source

El corazón de un espacio de Alexandroff

open access: yes, 2021
An Alexandroff space is a topological space whose topology is closed under intersections. The core of an Alexandroff space is the minimal model keeping its homotopy.
Solís Santana, Marlem   +1 more
core  

On I-Alexandroff and Ig-Alexandroff ideal topological spaces

open access: yesFilomat, 2011
In this paper, the notions of I -Alexandroff and Ig-Alexandroff ideal topological spaces are introduced and studied. Also, characterizations and properties of I-Alexandroff and Ig-Alexandroff ideal topological spaces are investigated.
openaire   +4 more sources

Structural Properties of Soft Biposets With Generalizations of Submaximal and Door Posets

open access: yesJournal of Mathematics, Volume 2026, Issue 1, 2026.
Soft biposet presented in this work is a new generalization of the notion of poset to soft set theory. This generalization not only equips the universal set with a partial order but also introduces another partial order on the set of parameters. Moreover, we extend the notions of submaximal and door posets to soft biposets.
Abdelwaheb Mhemdi, Smritijit Sen
wiley   +1 more source

On Alexandroff spaces [PDF]

open access: yes, 2010
Fen Bilimleri Enstitüsü, Matematik Ana Bilim DalıBu tezin ana amacı genelleştirilmiş ?-Alexandroff topolojik uzayları ve karakterizasyonlarını sunmaktır.
Öğüş, Cahide İrem
core  

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