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Absolutes of Hausdorff spaces and cardinal invariants FӨ and tӨ II

Cammaroto Filippo (Department of Mathematics, University of Messina, Italy.6)
Catalioto Andrei (Department of Mathematics, University of Messina, Italy.6)
Porter Jack (Department of Mathematics, University of Kansas, USA)

The research in this article continues the investigation of the cardinal functions FӨ and tӨ for absolutes of Hausdorff spaces. The relationship among the cardinal functions t, tӨ, F and FӨ are obtained for both of the Iliadis and Banaschewski absolutes for some well-known spaces.

Keywords: Closure, Ө-closure, free sequence, Ө-free sequence, t(X), tӨ(X), F(X), FӨ(X), compact spaces, H-closed spaces, Urysohn spaces, absolutes of Hausdorff spaces