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Listar por palabra clave "Countable tightness"

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Listar por palabra clave "Countable tightness"

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    F-points in countably compact spaces 
    Bella, Angelo; Malykhin, V.I. (Universitat Politècnica de València, 2001-04-01)
    [EN] Answering a question of A.V. Arhangel'skii, we show that any extremally disconnected subspace of a compact space with countable tightness is discrete.
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    Note about lindelof Sigma-SPACES nu X 
    Kakol, Jerzy; López Pellicer, Manuel (Cambridge University Press, 2012)
    The paper deals with the following problem: characterize Tichonov spaces X whose realcompactification ¿X is a Lindelöf ¿-space. There are many situations (both in topology and functional analysis) where Lindelöf ¿ (even ...