摘要
给出了偏序集拟阵的闭包算子和闭集的定义,并讨论了其相关性质,推广了拟阵理论中的有关结果,同时指出闭包算子和闭集在偏序集拟阵理论与拟阵理论中的区别和联系。
The definitions of the closure operator and closed set of a poset matroid are given at first,followed by the discussion of their relative properties.Some results of matroid theory are generalized.Meanwhile,the differences and connections between poset matroids and matroids are revealed about closure operators and closed sets.
出处
《西北大学学报(自然科学版)》
CAS
CSCD
北大核心
2002年第6期604-606,共3页
Journal of Northwest University(Natural Science Edition)
基金
国家自然科学基金资助项目(69972036)
陕西省自然科学基金资助项目(2000SL03)