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Mostrando ítems 1-2 de 2

Some topological and cardinal properties of the Nτφ-nucleus of a space X

Mukhamadiev, Farkhod (Universitat Politècnica de València, 2023-10-02)

[EN] In this paper, we study the behavior of some topological and cardinal properties of topological spaces under the influence of the Nτφ -kernel of a space X. It has been proved that the Nτφ-kernel of a space X preserves ...
The diagonal of a first countable paratopological group, submetrizability, and related results

Arhangelskii, A.V.; Bella, Angelo (Universitat Politècnica de València, 2007-10-01)

[EN] We discuss some properties stronger than Gδ-diagonal. Among other things, we prove that any first countable paratopological group has a Gδ-diagonal of infinite rank and hence also a regular Gδ-diagonal. This answer a ...

Mostrando ítems 1-2 de 2