Education
During 1945-1949 Vlastimil Pták studied mathematics and physics at the Charles University in Prague.
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Vlastimil Ptak
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Notable early work include generalizations of the open mapping theorem. 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.
Czechoslovak J. On matrices with non-positive off-diagonal elements and positive principal minors. (with Miroslav Fiedler) Czechoslovak J.
