Weak openness and almost openness
type: Item
instance of: scholarly article
title: Weak openness and almost openness
zbMATH Open document ID: 0562.54020
DOI: 10.1155/S0161171284000041
author: David A. Rose
published in: International Journal of Mathematics and Mathematical Sciences
publication date: 1984-01-01T00:00:00Z
full work available at URL: https://eudml.org/doc/45586
review text: Summary: Weak openness and almost openness for arbitrary functions between topological spaces are defined as duals to the weak continuity of Levine and the almost continuity of Husain respectively. Independence of these two openness conditions is noted and comparison is made between these and the almost openness of Singal and Singal. Some results dual to those known for weak continuity and almost continuity are obtained. Nearly almost openness is defined and used to obtain an improved link from weak continuity to almost continuity.
Mathematics Subject Classification ID: 54C10
zbMATH DE Number: 3895882
zbMATH Keywords: weakly open maps
zbMATH Keywords: almost open maps
zbMATH Keywords: weak continuity
zbMATH Keywords: almost continuity
MaRDI profile type: Publication
OpenAlex ID: W1974645915
description: scientific article; zbMATH DE number 3895882