摘要
定义了偏序集拟阵间的PO映射,讨论了它与偏序集拟阵间开映射的关系,最后给出了一个映射是PO映射的充分条件.
In this paper, the concept of PO mapping in poset matroids is defined, and the relationship between PO mappings and open mappings is discussed. Finally a sufficient condition is given for a mapping to be a PO mapping.
出处
《哈尔滨师范大学自然科学学报》
CAS
2012年第1期28-31,共4页
Natural Science Journal of Harbin Normal University
基金
陕西省教育厅专项科研计划项目(11JK0484)
