• Overview of Chinese core journals
  • Chinese Science Citation Database(CSCD)
  • Chinese Scientific and Technological Paper and Citation Database (CSTPCD)
  • China National Knowledge Infrastructure(CNKI)
  • Chinese Science Abstracts Database(CSAD)
  • JST China
  • SCOPUS
HU Xingyu, ZHONG Chunping. \mathcalI_sn\text- connected spaces and the images of metric spacesJ. Journal of Yunnan University: Natural Sciences Edition. DOI: 10.7540/j.ynu.20240304
Citation: HU Xingyu, ZHONG Chunping. \mathcalI_sn\text- connected spaces and the images of metric spacesJ. Journal of Yunnan University: Natural Sciences Edition. DOI: 10.7540/j.ynu.20240304

\mathcalI_sn\text- connected spaces and the images of metric spaces

  • We discuss the following Tkachuk’s question in the sense of ideal convergence: Is any Tychonoff connected sequential space a quotient image of a connected metric space? It is proved that let \mathcalI be an ideal on the set N then a topological space X is an \mathcalI_sn -connected space with an \mathcalI_sn -csf-network if and only if X is a continuous \mathcalI -covering image of a \mathcalI_sn\text- connected metric space. It follows that a topological space X is a connected \mathcalI_sn -sequential space with an \mathcalI_sn -csf-network if and only if X is a quotient \mathcalI -covering image of a \mathcalI_sn -connected metric space. Thus we partially resolved the problem raised by Tkachuk's.
  • loading

Catalog

    Turn off MathJax
    Article Contents

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return