Spaces not distinguishing convergences of real-valued functions

被引:18
|
作者
Bukovsky, L
Reclaw, T
Repicky, M
机构
[1] Slovak Acad Sci, Inst Math, Kosice 04154, Slovakia
[2] Safarik Univ, Dept Comp Sci, Kosice 04154, Slovakia
[3] Univ Gdansk, Inst Math, PL-80952 Gdansk, Poland
关键词
mQN-space; Sigma-space; wQN-space; QN-space; (QN)over-bar-space; Sigma QN-space; w Sigma QN-space; weak distributivity of a family of sets;
D O I
10.1016/S0166-8641(99)00226-6
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
In [Topology Appl, 41 (1991) 25] we have introduced the notion of a wQN-space as a space in which for every sequence of continuous functions pointwisely converging to 0 there is a subsequence quasi-normally converging to 0. In the present paper we continue this investigation and generalize some concepts touched there. The content is a variety of notions and relationships among them. The result is another scale in the investigation of smallness and the question is how this scale fits with other known scales and whether all relations in it are proper. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
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页码:13 / 40
页数:28
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