Embedding into discretely absolutely star-Lindelöf spaces II

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https://riunet.upv.es/handle/10251/86545

Cita bibliográfica

Song, Y. (2009). Embedding into discretely absolutely star-Lindelöf spaces II. Applied General Topology. 10(1):13-20. https://doi.org/10.4995/agt.2009.1783

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Resumen

[EN] A space X is discretely absolutely star-Lindelöf if for every open cover U of X and every dense subset D of X, there exists a countable subset F of D such that F is discrete closed in X and St(F, U) = X, where St(F, U) = S{U ∈ U : U ∩F 6= Ø}. We show that every Hausdorff star-Lindelöf space can be represented in a Hausdorff discretely absolutely star-Lindelöf space as a closed G-subspace.

Fuente

Applied General Topology issn: 1576-9402

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