摘要
1 Contiguity and Contiguity Topology Defintion 1.1 Let X be a non-void set.A contiguity for X is a non-void family U of subsets of X×X such that (a) each member of U contains the diagonal △; (b) if u∈U and u(?)v(?)X×X, then v∈U;and (c) if u and v are members of U, then u ∩v∈U. We also call pair (X, U) is a contiguous space. (where U is a contiguity for X).
出处
《哈尔滨工业大学学报》
EI
CAS
CSCD
北大核心
1991年第4期97-99,共3页
Journal of Harbin Institute of Technology
关键词
双邻近空间
配邻近空间
双拓扑空间
Bicontiguous spaces
bitopdogical spaces
pairwise contiguous spaces
