Spaces in which every dense subset is a G δ.

Autor:	Ahmadi Zand, M.R., Khayyeri, R.
Předmět:	TOPOLOGICAL spaces SET theory SUBSPACES (Mathematics) MATHEMATICS theorems CARDINAL numbers
Zdroj:	QM - Quaestiones Mathematicae; Mar2016, Vol. 39 Issue 2, p251-260, 10p
Abstrakt:	A topological space X is called aDGδ-space if every subset ofXis aGδ-set in its closure. In this paper we studyDGδ-spaces that contains subspaces in which every dense subset is open and spaces in which every subset is aGδ. We give some new results in these classes of topological spaces. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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