| 引用本文： |
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王培,李忠民,刘士琴.关于ℵ0-sn-度量空间[J].广西科学,2010,17(1):32-35. [点击复制]
- WANG Pei,LI Zhong-min,LIU Shi-qin.On ℵ0-sn-metric Spaces[J].Guangxi Sciences,2010,17(1):32-35. [点击复制]
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| 摘要: |
| 先给出ℵ0-sn-网的定义,并用实例说明此定义比ℵ0-弱基更弱,并再讨论ℵ0-sn-网的一些性质,得出ℵ0-弱基、ℵ0-sn-网、cs-网、cs*-网之间的一些等价关系. |
| 关键词: ℵ-空间 ℵ0-空间 ℵ0-sn-网 cs*-网 |
| DOI： |
| 投稿时间：2009-06-08修订日期：2009-10-13 |
| 基金项目:This project was supported by Guangxi Province Science Foundition(No.0728035). |
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| On ℵ0-sn-metric Spaces |
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WANG Pei1, LI Zhong-min2, LIU Shi-qin3
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| (1.Department of Mathematics and Computer Science, Yulin Normal University, Yulin, Guangxi, 537000, China;2.The Second Middle School of Qingtian, Qingtian, Zhejiang, 323900, China;3.Department of Mathematics, Hengshui University, Hengshui, Hebei, 253811, China) |
| Abstract: |
| A new concept of ℵ0-sn-network is given, and demonstrate that it's weaker than ℵ0-weak base through an example.Then some characterizations about ℵ0-sn-network are given, and the relations among ℵ0-weak base, ℵ0-sn-network, cs-network, cs*-network are discussed. |
| Key words: ℵ-spaces ℵ0-spaces ℵ0-sn-network cs*-network |
