摘要
介绍了计算四元素集上拓扑个数的主要方法和用微型计算机计算的结果．运用四元素集的基本性质，分析了四元素集上拓扑的结构，给出了四元素集上拓扑个数的主要计算过程．
This paper introduces the main methods for calculating the number of topologies on a set of 4 elements and the result of calculating with microcomputer. Using the prime properties of the set of 4 elements,this paper analysizes the structures of topologies on a set of 4 elements and exhibites the main process of calculating.
出处
《聊城大学学报（自然科学版）》
1996年第2期30-35,45,共7页
Journal of Liaocheng University:Natural Science Edition
关键词
四元素集上拓扑的个数
C语言
位运算
单点(子)集个数S
双点(子)集个数P
三点(子)集个数T
The number of topologies on a set of 4 elements
C language
Bit calculation
The number S of singlton (sub)sets
The number P of pair (sub)sets
The number T of triple (sub)sets
