The smallest ideal of \(\beta S\) is not closed

DOI10.1016/j.topol.2009.04.012zbMath1176.22003OpenAlexW2010561222MaRDI QIDQ1032908

Yevhen Zelenyuk

Publication date: 5 November 2009

Published in: Topology and its Applications (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1016/j.topol.2009.04.012

zbMATH Keywords

idempotentcompact groupultrafilterStone-Čech compactificationsmallest ideal

Mathematics Subject Classification ID

Topological groups (topological aspects) (54H11) Structure of topological semigroups (22A15) Ramsey theory (05D10) Other topological algebraic systems and their representations (22A30)

Related Items

\(K(\beta S)\) is not closed

Cites Work

• Unnamed Item
• On the ultrafilter semigroup of a topological group
• Almost maximal spaces
• Algebra in the Stone-Čech compactification: theory and applications