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On weak neighborhood systems and spaces

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We introduce and study the concepts of weak neighborhood systems, weak neighborhood spaces, ω(ψ, ψ′)-continuity, ω-continuity and ω*-continuity on WNS’s.

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Correspondence to W. K. Min.

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This work was supported by a grant from Research Institute for Basic Science at Kangwon National University.

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Min, W.K. On weak neighborhood systems and spaces. Acta Math Hung 121, 283–292 (2008).

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2000 Mathematics Subject Classification