[1]李 瑞,韩广发,宋延奎.关于Star-Lindelf空间的注释(英文)[J].南京师范大学学报(自然科学版),2008,31(02):13-15.
 Li Rui,Han Guangfa,Song Yankui.Some Remarks on Star-Lindelf Spaces[J].Journal of Nanjing Normal University(Natural Science Edition),2008,31(02):13-15.
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关于Star-Lindelf空间的注释(英文)()
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《南京师范大学学报》(自然科学版)[ISSN:1001-4616/CN:32-1239/N]

卷:
第31卷
期数:
2008年02期
页码:
13-15
栏目:
数学
出版日期:
2008-06-30

文章信息/Info

Title:
Some Remarks on Star-Lindelf Spaces
作者:
李 瑞1 韩广发2 宋延奎2
( 1. 上海金融学院应用数学系, 上海201209 )
( 2. 南京师范大学数学与计算机科学学院, 江苏南京210097 )
Author(s):
Li Rui1Han Guangfa2Song Yankui2
1.Department of Applied Mathematics,Shanghai Finance University,Shanghai 201209,China
2. S chool ofM athem atics and C ompu ter Science, N an jing Norm alUn iversity, Nan jing 210097, Ch ina
关键词:
可数紧 Lindelf star-Lindelf
Keywords:
countably com pac t L inde lÊf sta r-L inde lÊ f
分类号:
O189.11
摘要:
一个空间称为star-Lindelf如果对于X的任意开覆盖U,在X中存在一个可数子集F使得St(F,U)=X.在这个注释中,我们讨论star-Lindelf空间与相关拓扑空间关系,并且给出两个可数紧空间的积不是star-Lindelf空间的例子.
Abstract:
A spaceX is star-LindelÊ f if for every open cover U ofX, there ex ists a coun tab le subsetF o fX such that St (F, U) =X. In th is note, we d iscuss the re la tionsh ip be tw een star-L inde lÊ f spaces and re lated spaces, and g ive an examp le show ing the product o f tw o countab le compact spaces is not star-L inde lÊ .f

参考文献/References:

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备注/Memo

备注/Memo:
Foundation item: Supported by the NSFC ( 10571081) and th eNSF of J iangsu H igher E du cation Inst itu tions ofCh in a ( 07K JB110055 ).
Corresponding autho r: L iRu,i associate p rofessor, m ajored in general topology. E-m ail:robert lirui@yah oo. com. cn
更新日期/Last Update: 2013-05-05