Displaying similar documents to “Some properties of the density topology with respect to an extension of the Lebesgue measure.”

On similarity between topologies

Artur Bartoszewicz, Małgorzata Filipczak, Andrzej Kowalski, Małgorzata Terepeta (2014)

Open Mathematics

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Let T 1 and T 2 be topologies defined on the same set X and let us say that (X, T 1) and (X, T 2) are similar if the families of sets which have nonempty interior with respect to T 1 and T 2 coincide. The aim of the paper is to study how similar topologies are related with each other.

On topologies generated by some operators

Katarzyna Flak, Jacek Hejduk (2013)

Open Mathematics

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The paper concerns topologies introduced in a topological space (X, τ) by operators which are much weaker than the lower density operators. Some properties of the family of sets having the Baire property and the family of meager sets with respect to such topologies are investigated.

On stems

R. Duda (1966)

Colloquium Mathematicae

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