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Ryszard Engelking (born 1935 in Sosnowiec) is a Polish mathematician. He was working mainly on general topology and dimension theory. He is author of several influential monographs in this field. The 1989 edition of his ''General Topology'' is nowadays a standard reference for Topology.〔K.P. Hart, J.-I. Nagata and J.E. Vaughan Editors, Encyclopedia of general Topology, Elsevier 2003, p. vii〕 ==Scientific work== Apart from his books, Ryszard Engelking is known, among other things, for a generalization to an arbitrary topological space of the "Alexandroff double circle",〔Haruto Ohta, Special Spaces, Chapter b-13 in Encyclopedia of general Topology.〕〔R. Engelking, On the double circumference of Alexandroff, Bull. Acad. Polon. Sci. 16 (1968), 629–634.〕 for works on completely metrizable spaces, suborderable spaces and generalized ordered spaces.〔Encyclopedia of general Topology, pp. 204, 206, 252 and 328〕 The ''Engelking-Karlowicz theorem'' is a statement about the existence of a family of functions from to with topological〔Ryszard Engelking and Monica Karlowicz, Some theorems of set theory and their topological consequences, Fundamenta Mathematicae, 57, 275–285, 1965.〕 and set-theoretical〔 Uri Abraham and Menachem Magidor, Cardinal Arithmetic, Ch. 14 in Handbook of Set Theory (Matthew Foreman, Akihiro Kanamori, Editors) pp. 1223, 1226.〕 applications. In addition to research papers authored just by himself, he also published jointly with Kazimierz Kuratowski, Roman Sikorski, Aleksander Pełczyński and others. He has published about 60 scientific works reviewed by MathSciNet and Zentralblatt. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Ryszard Engelking」の詳細全文を読む スポンサード リンク
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