On dense subspaces of C-p(X)

被引:0
|
作者
Sakai, Masami [1 ]
机构
[1] Kanagawa Univ, Dept Math, Yokohama, Kanagawa 2218686, Japan
来源
NOTE DI MATEMATICA | 2007年 / 27卷
关键词
function space; dense subspace; caliber; (kappa; kappa)-compact; kappa)-narrow; linearly Lindelof; omega-cover; gamma-cover; Frechet;
D O I
暂无
中图分类号
O1 [数学];
学科分类号
0701 ; 070101 ;
摘要
For a Tychonoff space X, we denote by C-p(X) the space of all real-valued continuous functions on X with the topology of pointwise convergence. We show the following: (1) if omega(1) is a caliber for every dense subspace of C-p(X), then C-p(X) is (omega(1),omega(1))-narrow; (2) if every dense subspace of C-p(X) is compact-dense in C-p(X), then every non-trivial countable omega-cover of open sets of X contains a gamma-cover. The first result gives the positive answer to Problem 4.4 in [6], and the second one is a partial answer to Problem 4.3 in [6].
引用
收藏
页码:41 / 46
页数:6
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