摘要
主要讨论拓扑群中的一些广义度量性质.证明了对于拓扑群G和G的局部紧度量子群H,如果商群G/H是层空间(半层空间,k半层空间,σ空间),则G也是层空间(半层空间,k半层空间,σ空间),这肯定回答了Arhangel'skii A.V.和Uspenskij V.V.提出的一个问题.同时还讨论了弱拟第一可数的,不含S_ω的闭拷贝的仿拓扑群.
This paper is concerned with some generalized metrizable properties in topological groups. It is proved that for a topological group G and a locally compact metrizable subgroup H of G, if the quotient space G/H is stratifiable (resp. semi-stratifiable, k-semi-stratifiable, a σ-space) then the space G is stratifiable (resp. semi-stratifiable, k- semi-stratifiable, a σ-space), which gives an affirmative answer to a question raised by Arhangel'skii A. V. and Uspenskij V. V.. Also the authors discuss the N0-weakly firstcountable paratopological groups which contain no closed copies of Sω.
出处
《数学年刊(A辑)》
CSCD
北大核心
2009年第5期697-704,共8页
Chinese Annals of Mathematics
基金
国家自然科学基金(No.10571151)
福建省自然科学基金(No.2009J01013)资助的项目
关键词
拓扑群
仿拓扑群
弱拟第一可数空间
层空间
Topological groups, Paratopological groups, NO-weakly firstcountable spaces, Stratifiable spaces