Spaces where all closed sets are $\alpha$-limit sets

Spaces where all closed sets are $\alpha$-limit sets

Topology and its Applications 310 (2022), Art. No. 108035 Metrizable spaces are studied in which every closed set is an $\alpha$-limit set for some continuous map and some point. It is shown that this property is enjoyed by every space containing sufficiently many arcs (formalized in the notion of a...

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Hauptverfasser: Hantáková, Jana, Roth, Samuel, Snoha, Ľubomír
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description Topology and its Applications 310 (2022), Art. No. 108035 Metrizable spaces are studied in which every closed set is an $\alpha$-limit set for some continuous map and some point. It is shown that this property is enjoyed by every space containing sufficiently many arcs (formalized in the notion of a space with enough arcs), though such a space need not be arcwise connected. Further it is shown that this property is not preserved by topological sums, products and continuous images and quotients. However, positive results do hold for metrizable spaces obtained by those constructions from spaces with enough arcs.
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No. 108035 Metrizable spaces are studied in which every closed set is an $\alpha$-limit set for some continuous map and some point. It is shown that this property is enjoyed by every space containing sufficiently many arcs (formalized in the notion of a space with enough arcs), though such a space need not be arcwise connected. Further it is shown that this property is not preserved by topological sums, products and continuous images and quotients. However, positive results do hold for metrizable spaces obtained by those constructions from spaces with enough arcs.</abstract><doi>10.48550/arxiv.2111.02069</doi><oa>free_for_read</oa></addata></record>
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title Spaces where all closed sets are $\alpha$-limit sets
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