SEPARATING SETS BY UPPER SEMICONTINUOUS QUASI-CONTINUOUS FUNCTIONS

被引：3

作者：

Szczuka, Paulina ^{[1
]}

机构：

[1] Kazimierz Wielki Univ, PL-85072 Bydgoszcz, Poland

来源：

QUAESTIONES MATHEMATICAE | 2015年 / 38卷 / 03期

关键词：

Quasi-continuous function; upper semicontinuous function; Urysohn lemma; separating sets;

D O I：

10.2989/16073606.2014.981724

中图分类号：

O1 [数学];

学科分类号：

0701 ; 070101 ;

摘要：

In this paper we characterize the pairs (A(0), A(1)) and (A(-), A(+)) of disjoint sets which can be separated by an upper semicontinuous quasi-continuous function.

引用

页码：341 / 348

页数：8

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