On msss-Mapping
  
Key Words: σ-locally countable collection   cs*-network   cs-network: sequence-covering mapping   strong sequence-covering mapping   msss-mapping.  
Fund Project:
Author NameAffiliation
LI Ke-dian Dept. of Math.
Shangqiu Teachers′ College
Henan 476000 
FENG Xiu-feng Dept. of Math.
Henan Normal University
Xinxiang 453002 
LIU Zheng-shuai Dept. of Math.
Henan Normal University
Xinxiang 453002 
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Abstract:
      In this paper we prove the following results: (1) A T3 topological space X is the sequence-covering msss-image of a metric space if and only if it has a σ-locally countable cs*-network; (2) A T3 topological space X is the strong sequence-covering msss-image of a matric space if and only if it has a σ-locally countable cs-network.
Citation:
DOI:10.3770/j.issn:1000-341X.2000.02.015
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