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closed map meaning in English

闭映射

Examples

  1. The models should be based on objects because then you get a very close mapping between real objects like people , places , and things and objects in the information systems
    (企业工程产出的模式必须是物件导向的,因而您可将真实世界里的物件如人、地方、及事物等,几乎能一对一密切对应到资讯系统里的物件。 )
  2. It is a main task of general topology to compare different spaces . mappings which connect different spaces are important tools to complete it . which mapping preserves some special generalized metric space is a basic probleme in investigating generalized metric spaces by mappings . g - first countable spaces and g - metri / able spaces have many important topological properities so to investigate which mapping preserves them is very necessary . in [ 7 ] , clnian liu and mu - ming dai prove that open - closed mappings preserve g - metri / able spaces ; whether open mappings preserve g - first countable spaces is an open probleme asked by tanaka in [ 6 ] . in [ 4 ] , sheng - xiang xia introduces weak opewn mappings and investigates the relations between them and 1 - sequence - covering mappings . in the second section of this article , we investigate weak open mappings have the relations with other mappings and prove that the finite - to - one weak open mappings preserve g - first countable , spaces and weak open closed mapping preserve g - metrizable spaces . in the third section , we investigate an example to show that perfect mappings do not preserve g - first countable spaces , g - metrizable spaces , sn - first countable spaces and sn - metrizable spaces
    在文献[ 4 ]中,夏省祥引进了弱开映射,并研究了它和1 -序列覆盖映射的关系。本文在第二节研究了弱开映射与序列商映射,几乎开映射的关系,证明了有限到一的弱开映射保持g -第一可数空间;弱开闭映射保持g -度量空间。第三节研究了文献[ 5 ]中的一个例子,证明了完备映射不保持g -第一可数空间, g -度量空间, sn -第一可数空间, sn -度量空间。

Related Words

  1. mapping
  2. mapes
  3. maping
  4. maped
  5. mapped
  6. maps
  7. map
  8. close mapping
  9. closed mapping
  10. closed manifold
  11. closed manometer
  12. closed mapping
  13. closed marginal geosyncline
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