| R~n中不存在既开又闭的非空真子集 |
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| 引用本文： | 樊红云,吕晶玉.R~n中不存在既开又闭的非空真子集[J].高师理科学刊,2001,21(3):3-3,12. |
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| 作者姓名： | 樊红云 吕晶玉 |
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| 作者单位： | 1. 齐齐哈尔大学数学系,黑龙江,齐齐哈尔,161006
2. 齐齐哈尔铁路第1中学,黑龙江,齐齐哈尔,161001 |
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| 摘 要： | 证明了R~n 中不存在即开又闭的非空真子集
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| 关 键 词： | n维欧氏空间 开集 闭集 |
| 文章编号： | 1007-9831(2001)03-0003-01 |
There is not an open closed non-empty proper subset in the Rn |
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| FAN Hong yun ,LU Jing yu.There is not an open closed non-empty proper subset in the Rn[J].Journal of Science of Teachers＇College and University,2001,21(3):3-3,12. |
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| Authors: | FAN Hong yun LU Jing yu |
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| Institution: | FAN Hong yun 1,LU Jing yu |
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| Abstract: | proved that there is not an open closed non empty proper subset in the R n. |
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| Keywords: | n dimensional euclidean spece open set closed set |
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