Herrmann, Robert A. The Q-topology, Whyburn type filters and the cluster set map. (English) Zbl 0343.54044 Proc. Am. Math. Soc. 59, 161-166 (1976). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 54J05 Nonstandard topology 03H99 Nonstandard models 54D99 Fairly general properties of topological spaces PDF BibTeX XML Cite \textit{R. A. Herrmann}, Proc. Am. Math. Soc. 59, 161--166 (1976; Zbl 0343.54044) Full Text: DOI OpenURL