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Note on hit-and-miss topologies
Authors:László Zsilinszky
Institution:(1) Department of Mathematics and Computer Science, University of North Carolina at Pembroke, 28372 Pembroke, NC, USA
Abstract:This is a continuation of 19]. We characterize first and second countability of the general hit-and-miss hyperspace topologyτ + Δ for weakly-R 0 base spaces. Further, metrizability ofτ + Δ is characterized with no preliminary conditions on the base space and the generating family of closed sets and a new proof on uniformizability (i.e. complete regularity) ofτ + Δ is given in this general setting, thus generalizing results of 3], 5] and 6].
Keywords:1991 Mathematics Subject Classification" target="_blank">1991 Mathematics Subject Classification  54B20  Secondary 54D15  54E35
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