Coset spaces and cardinal invariants

被引:0
|
作者
M. Fernández
I. Sánchez
M. Tkachenko
机构
[1] Universidad Autónoma de la Ciudad de México,Academia de Matemáticas
[2] Universidad Autónoma Metropolitana,Departamento de Matemáticas
来源
Acta Mathematica Hungarica | 2019年 / 159卷
关键词
topological group; coset space; neutral subgroup; feathered group; character; -character; weight; -weight; metrizability; submetrizability; primary 22A05; 54A25; 54B15; secondary 54E15; 54H11;
D O I
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中图分类号
学科分类号
摘要
We present an example of a closed subgroup H of a topological group G such that the quotient space G/H is compact, first-countable, and satisfies πw(G/H)<w(G/H)\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$${\pi}w(G/H) < w(G/H)$$\end{document}. We show that if H is a closed neutral subgroup of a topological group G such that G/H has countable character (pseudocharacter), then G/H is metrizable (submetrizable).
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页码:486 / 502
页数:16
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