Herrmann, Robert A. The productivity of generalized perfect maps. (English) Zbl 0463.54050 J. Indian Math. Soc., New Ser. 41, 375-386 (1977). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page MSC: 54J05 Nonstandard topology 54C10 Special maps on topological spaces (open, closed, perfect, etc.) 54C08 Weak and generalized continuity 54B10 Product spaces in general topology PDF BibTeX XML Cite \textit{R. A. Herrmann}, J. Indian Math. Soc., New Ser. 41, 375--386 (1977; Zbl 0463.54050) OpenURL