Results 71 to 80 of about 383 (157)

Topologías de Alexandroff: tres puntos de vista diferentes [PDF]

, 2010
Se hace un estudio de los espacios de Alexandroff (aquellos que son cerrados para intersecciones) desde tres perspectivas: por filtros, por cubos y por monoides. Se empieza con una serie de definiciones y teoremas básicos. Se caracterizan las topologías
Robles Castro, José Edilberto
core  

Universal Causality. [PDF]

Entropy (Basel), 2023
Mahadevan S.
europepmc   +1 more source

Realcompact Alexandroff spaces and regular σ-frames

, 1981
Bibliography: pages 96-103.In the early 1940's, A.D. Alexandroff [1940), [1941) and [1943] introduced a concept of space, more general than topological space, in order to obtain a simple connection between a space and the system of real-valued functions ...
Gilmour, Christopher Robert Anderson
core  

On subsets of Alexandroff duplicates [PDF]

, 2005
summary:We characterize the subsets of the Alexandroff duplicate which have a G$_\delta$-diagonal and the subsets which are M-spaces in the sense of ...
Mizokami, Takemi, Takemi Mizokami
core  

Realization of Permutation Modules via Alexandroff Spaces

Results in Mathematics
AbstractWe raise the question of the realizability of permutation modules in the context of Kahn’s realizability problem for abstract groups and the G-Moore space problem. Specifically, given a finite group G, we consider a collection $$\{M_i\}_{i=1}^n$$ {
Cristina Costoya, Rafael Gomes, Antonio Viruel   +2 more
openaire   +4 more sources

Fiber bundles over Alexandroff spaces

, 2019
We introduce a topological variant of the Grothendieck construction which serves to represent every fiber bundle over an Alexandroff space. Using this result we give a classification theorem for fiber bundles over Alexandroff spaces with T$_0$ fiber and we construct a universal bundle for bundles with T$_0$ fiber over posets which are cofibrant objects
Cianci, Nicolás, Ottina, Miguel
openaire   +2 more sources

The small inductive dimension of subsets of Alexandroff spaces

, 2016
We describe the small inductive dimension ind in the class of Alexandroff spaces by the use of some standard spaces. Then for ind we suggest decomposition, sum and product theorems in the class.
Han, Sang-Eon,, Sang-Eon Han, Tjatyrko, Vitalij,, Yasunao Hattori, Hattori, Yasunao,, Vitalij Chatyrko   +5 more
core   +1 more source

On upper bounded T_0 Alexandroff spaces

International Journal of Contemporary Mathematical Sciences, 2014
In this paper, we investigate some properties on a class of T0 A−spaces called upper bounded. This class contains properly the class of Artinian T0 A−spaces. We prove that if X is a UB T0 A−space, then it is always strongly irresolvable and ∀x ∈ X, ˆ x ∅. Moreover, we prove that = PO(X) ⊆ SO(X).
Hisham Mahdi, Lubna Elostath
openaire   +1 more source

Parametrized topological complexity of poset-stratified spaces. [PDF]

J Appl Comput Topol, 2022
Tanaka K.
europepmc   +1 more source

Algebras, Graphs and Ordered Sets - ALGOS 2020 & the Mathematical Contributions of Maurice Pouzet. [PDF]

Order (Dordr), 2023
Couceiro M, Duffus D.
europepmc   +1 more source