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几种弱形式连续映射的网式刻画
引用本文:平征,李佳.几种弱形式连续映射的网式刻画[J].宁德师专学报(自然科学版),2005,17(4):337-339,343.
作者姓名:平征  李佳
作者单位:1. 宁德师范高等专科学校数学系,福建,宁德,352100
2. 江西师范大学计算机信息工程学院,江西,南昌,330022
摘    要:在一般拓扑空间中,以远域为工具引入和研究网的S-收敛性、θ-收敛性、δ-收敛性等概念,并利用这些概念给出半连续映射、弱连续映射和几乎连续映射的一些等价条件.

关 键 词:拓扑空间  远域  网的S-收敛性、(θ-收敛性、δ-收敛性)  半连续性  弱连续性  几乎连续性
文章编号:1004-2911(2005)04-0337-03
收稿时间:09 1 2005 12:00AM
修稿时间:2005-09-01

The characterization of several weak forms of continuous mappings by nets
PING Zheng,LI Jia.The characterization of several weak forms of continuous mappings by nets[J].Journal of Ningde Teachers College(Natural Science),2005,17(4):337-339,343.
Authors:PING Zheng  LI Jia
Institution:1 .Department of Mathemetics,Ningde Teachers College,Ningde Fujian 352100,China; 2. Computer Information Engineering tnstitute,Jiagxi Normal University,Nanchan Jiangxi 330022,China
Abstract:In this paper, the notions of convergence, convergence and convergence of netson general topological spaces are introduced and studied by means of r- neighborhood. Through these concepts, some equivalent characterizations with respect to semi - continuous , weakly continuous and almost continuous mappings are given.
Keywords:topological spaces  r-neighborhood  convergence(convergence  convergence) of nets  wemi-continuity  weakly continuity  almost continuity  
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