On the cardinality of the Ө-closed hull of sets II

Autor:	Jack R. Porter, Andrei Catalioto, Filippo Cammaroto, Bruno Antonio Pansera
Rok vydání:	2013
Předmět:	Combinatorics Continuation Cardinality Character (mathematics) Section (category theory) 54A25 54D10 54A20 54D25 General Mathematics Hull General Topology (math.GN) FOS: Mathematics Urysohn and completely Hausdorff spaces Mathematics
Zdroj:	Filomat. 27:1107-1111
ISSN:	0354-5180
DOI:	10.2298/fil1306107c
Popis:	The research in this paper is a continuation of the investigation of the cardinality of the $��$-closed hull of subsets of spaces. This research obtains new upper bounds of the cardinality of the $��$-closed hull of subsets using cardinal functions of $��$-bitightness (\cite{Ca-Ko}), finite $��$-bitightness (\cite{Ca-Ca-Pa-Ts}) and $��$-bitightness small number (\cite{Ca-Ca-Pa-Ts}) of spaces. In the final section, examples of spaces are presented including one that answers a question posed in \cite{Bo-Ca-Ma} and \cite{Bo-Pa}. This paper has been withdrawn by the author due to an error in chapter 2
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abea4fe64d4821c7809e136593ef5e4c https://doi.org/10.2298/fil1306107c Zobrazit plný text záznamu