Selections, Paracompactness and Compactness

Autor:	Choban, Mitrofan M., Mihaylova, Ekaterina P., Nedev, Stoyan I.
Rok vydání:	2009
Předmět:	Mathematics - General Topology 54C60 54C65 54D20 54D30.
Druh dokumentu:	Working Paper
Popis:	In the present paper, the Lindelof number and the degree of compactness of spaces and of the cozero-dimensional kernel of paracompact spaces are characterized in terms of selections of lower semi-continuous closed-valued mappings into complete metrizable (or discrete) spaces. Comment: 23 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0903.3514 Zobrazit plný text záznamu View this record from Arxiv