当前位置: X-MOL 学术Topol. Appl. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Star and strong star-type versions of Rothberger and Menger principles for hit-and-miss topology
Topology and its Applications ( IF 0.6 ) Pub Date : 2021-06-24 , DOI: 10.1016/j.topol.2021.107758
Ricardo Cruz-Castillo , Alejandro Ramírez-Páramo , Jesús F. Tenorio

In this paper, we introduce some selection principles, which are motivated by star and strong star Rothberger and star and strong star Menger principles. Theorems to characterize the star and strong star Rothberger-type properties in spaces using the family CΔ(Λ) of cΔ(Λ)-covers of a space X and the family D of dense subsets in hit-and-miss hyperspaces are proved. In a similar way are presented the versions to characterize the star and strong star Menger-type properties in spaces using again the families CΔ(Λ) and D in the respective spaces. Finally, we provide some relationships between the selection principles defined along the paper.



中文翻译:

Rothberger 和 Menger 原理的星型和强星型版本的命中和未命中拓扑

在本文中,我们介绍了一些选择原则,这些原则受到明星和强星 Rothberger 和明星和强星 Menger 原则的启发。使用族表征空间中星和强星 Rothberger 型性质的定理CΔ(Λ)CΔ(Λ)-空间X和家庭的封面D证明了命中和未命中超空间中的密集子集。以类似的方式呈现了再次使用族来表征空间中恒星和强星门格尔型特性的版本CΔ(Λ)D在各自的空间。最后,我们提供了本文定义的选择原则之间的一些关系。

更新日期:2021-07-02
down
wechat
bug