Stanislaw Szarek

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Stanisław J. Szarek (born November 13, 1953 in Lądek-Zdrój , Poland ) is a Polish mathematician .

Szarek studied mathematics at the University of Warsaw from 1972 to 1976 and obtained his master's degree with the thesis On the best constant in the Khinchine inequality . He then went to the Mathematical Institute of the Polish Academy of Sciences , where he received his doctorate in 1979 with the dissertation Analytic properties of biorthogonal systems and bases in function spaces under Aleksander Pełczyński . Since 1983 he has taught at Case Western Reserve University in Cleveland (Ohio) . There he became a Sloan Research Fellow in 1986 . Since 1996 he has also been a professor at the University of Pierre and Marie Curie . He is a fellow of the American Mathematical Society .

Szarek's main area of ​​work is functional analysis , in particular the geometry of Banach spaces and convexity theory . In addition, he works in operator theory , approximation theory and probability theory . The first example of a Banach space without a shudder basis , but with an approximation property, comes from Szarek .

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