A coanalytic Menger group that is not σ-compact

被引：2

作者：

Tokgoz, Secil ^{[1
]}

机构：

[1] Hacettepe Univ, Dept Math, Ankara, Turkey

来源：

TURKISH JOURNAL OF MATHEMATICS | 2018年 / 42卷 / 01期

关键词：

Coanalytic; Menger; Hurewicz; Rothberger; gamma-property; sigma-compact; V = L; productively Lindelof; topological group; LINDELOF SPACES; COMBINATORICS; SETS; PROPERTY;

D O I：

10.3906/mat-1612-84

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

Under V = L we construct coanalytic topological subgroups of reals, demonstrating that even for definable groups of reals, selection principles may differ.

引用

页码：12 / 20

页数：9

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