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Añadidos recientemente

RiuNet: Repositorio Institucional de la Universidad Politécnica de Valencia

Applied General Topology - Vol 08, No 2 (2007): Enviados recientemente

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    On the Order Hereditary Closure Preserving Sum Theorem 
    Gong, Jianhua; Reilly, Ivan L. (Universitat Politècnica de València, 2007-10-01)
    [EN] The main purpose of this paper is to prove the following two theorems, an order hereditary closure preserving sum theorem and an hereditary theorem: (1) If a topological property P satisfies (Σ′) and is closed hereditary, ...
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    CL(R) is simply connected under the Vietoris topology 
    Esty, N.C. (Universitat Politècnica de València, 2007-10-01)
    [EN] In this paper we present a proof by construction that the hyperspace CL(R) of closed, nonemtpy subsets of R is simply connected under the Vietoris topology. This is useful in considering the convergence of time scales. ...
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    On countable star-covering properties 
    Song, Yan-Kui (Universitat Politècnica de València, 2007-10-01)
    [EN] We introduce two new notions of topological spaces called a countably starcompact space and a countably absolutely countably compact (= countably acc) space. We clarify the relations between these spaces and other ...
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    On br -closed sets 
    Ganster, Maximilian; Steiner, Markus (Universitat Politècnica de València, 2007-10-01)
    [EN] This paper is closely related to the work of Cao, Greenwood and Reilly in as it expands and completes their fundamental diagram by considering b-closed sets. In addition, we correct a wrong assertion in about βgs-spaces.
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    Sandwich-type characterization of completely regular spaces 
    Gutiérrez García, Javier; Kubiak, Tomasz (Universitat Politècnica de València, 2007-10-01)
    [EN] All the higher separation axioms in topology, except for complete regularity, are known to have sandwich-type characterizations. This note provides a characterization of complete regularity in terms of inserting a ...