A charaterization of closed maps using the whyburn construction

Yvonne O. Stallings

International Journal of Mathematics and Mathematical Sciences, 1985, vol. 8, 1-3

Abstract:

In this paper we modify the Whyburn construction for a continuous function f : X → Y . If the range is first countable, we get a characterization of closed maps; namely, the constructions are the same if and only if the map is closed.

Date: 1985
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Persistent link: https://EconPapers.repec.org/RePEc:hin:jijmms:986019

DOI: 10.1155/S0161171285000229

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