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Vlastimil Pták ((:ˈvlascɪmɪl ˈptaːk); November 8, 1925 in Prague – May 5 1999) was a Czech mathematician, who worked in functional analysis, theoretical numerical analysis, and linear algebra. Notable early work include generalizations of the open mapping theorem . During 1945–49 Vlastimil Pták studied mathematics and physics at the Charles University in Prague. Later, he worked at the university and since 1952 in Mathematical Institute of Czechoslovak Academy of Sciences. In 1965 he was named professor at the Charles University. He has published more than 160 mathematical research papers. ==Selected publications== *''Completeness and the open mapping theorem.'' Bull. Soc. Math. France 86 1958 41–74. (Text online ) *''On complete topological linear spaces.'' Czechoslovak Math. J. 3(78), (1953). 301–364. *''On matrices with non-positive off-diagonal elements and positive principal minors.'' (with Miroslav Fiedler) Czechoslovak Math. J. 12 (87) 1962 382–400. 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「Vlastimil Pták」の詳細全文を読む スポンサード リンク
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