| 集合环和的性质 |
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| 引用本文： | 史千里.集合环和的性质[J].长江大学学报,2005,2(7):191-192. |
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| 作者姓名： | 史千里 |
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| 作者单位： | 长江大学信息与数学学院,湖北,荆州,434023 |
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| 摘 要： | 给出了元素属于集合环和的充分必要条件、集合交与集合环和的关系、由仅属于n个集合之一的元素所构成的集合与集合环和的关系,得出了仅属于3个集合之一的元素所构成集合的基数公式.
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| 关 键 词： | 集合 环和 基数 性质 |
| 文章编号： | 1673-1409(2005)07-0191-02 |
| 修稿时间： | 2005年4月10日 |
Character of Cycle Sum |
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| SHI Qian-li.Character of Cycle Sum[J].Journal of Yangtze University,2005,2(7):191-192. |
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| Authors: | SHI Qian-li |
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| Abstract: | The law to decide whether an element belongs to the cycle set or not is built.The relation of the intersection set and the cycle set of n sets is found.The relation of the set made of the elements,each of which belongs to only one of n sets and the cycle set are found too.The cardinal number equation is obtained for the set made by the element in one of the 3 sets. |
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| Keywords: | set cycle set cardinal number property |
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