| 王尚志,李伯渝.拟序定向集最小共尾部分的结构[J].数学研究及应用,1983,3(1):91~92 |
| 拟序定向集最小共尾部分的结构 |
| On the Minimal Cofinal Subsets of a Directed Quasi Ordered Set |
| |
| DOI：10.3770/j.issn:1000-341X.1983.01.018 |
| 中文关键词: |
| 英文关键词: |
| 基金项目: |
|
| 摘要点击次数: 1888 |
| 全文下载次数: 840 |
| 中文摘要: |
| |
| 英文摘要: |
| It is shown that for any directed quasi ordered set (Q,≤),there is a minimal ordinal number λ such that every cofinal subset of Q contains a cofinal subset which is the o-th class original set of a λ-th class chain of Q. A special case of our results gives necessary and sufficient conditions for a directed set to contain a cofinal chain. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
|
|
|
