Gฯ-sets in symmetrizable and related spa
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S.W. Davis; G. Gruenhage; P.J. Nyikos
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Article
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1978
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Elsevier Science
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In this paper we answer questions of Arhangel'skii and Michael by providing an example of a regular symmetrizable spslce which is not subparacompact and has a closed subset which is not a C&set. We also use the idea of sequential arder to obtain some positive results, and several examples are provid