Nguyen Van Dung On sequence-covering \(pi\)-\(s\)-images of locally separable metric spaces. (English) Zbl 1274.54091 Mat. Vesn. 61, No. 2, 131-137 (2009). Summary: We introduce the notion of double \(cs\)-cover and give a characterization on sequence-covering \(\pi\)-\(s\)-images of locally separable metric spaces by means of double \(cs\)-covers having the \(\pi\)-property of \(\aleph_0\)-spaces. MSC: 54E35 Metric spaces, metrizability 54D65 Separability of topological spaces 54C10 Special maps on topological spaces (open, closed, perfect, etc.) PDFBibTeX XMLCite \textit{Nguyen Van Dung}, Mat. Vesn. 61, No. 2, 131--137 (2009; Zbl 1274.54091)