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A note on universal minimal dynamical systems

Sławomir Turek (1991)

Commentationes Mathematicae Universitatis Carolinae

Let M ( G ) denote the phase space of the universal minimal dynamical system for a group G . Our aim is to show that M ( G ) is homeomorphic to the absolute of D 2 ω , whenever G is a countable Abelian group.

A note on weakly ( μ , λ ) -closed functions

Bishwambhar Roy (2013)

Mathematica Bohemica

In this paper we introduce a new class of functions called weakly ( μ , λ ) -closed functions with the help of generalized topology which was introduced by Á. Császár. Several characterizations and some basic properties of such functions are obtained. The connections between these functions and some other similar types of functions are given. Finally some comparisons between different weakly closed functions are discussed. This weakly ( μ , λ ) -closed functions enable us to facilitate the formulation of certain...

A note on ψ -operator.

Modak, Shyampada, Bandyopadhyay, Chhanda (2007)

Bulletin of the Malaysian Mathematical Sciences Society. Second Series

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