Andrew Sobczyk

Andrew Florian (Andy) Sobczyk (born in 1915 in Duluth (Minnesota) - November 7, 1981) - American mathematician of Polish descent dealing with functional analysis and control theory. He proved theorems called Sobczyk theorem and the Phillips-Sobczyk theorem on the existence of projections on isomorphic copies of c0 space in Banach spaces.

Career

Graduate degrees and Master of Mathematics obtained at the University of Minnesota. In his doctoral dissertation titled Projections in Minkowski and Banach Spaces, written in 1939 at Princeton University under the direction of H.F. Bohnenblusta proved the version of the Hahn-Banach theorem for complex linear spaces. This result was published jointly with Bohlenbust in the Bulletin of the American Mathematical Society. In the years 1939-1942 he worked at the University of Oregon and then at Radiation Laboratories (M.I.T.) in Los Alamos. In later years, he worked at Boston University, University of Florida, Miami University and the University of Southern Illinois. He settled at Clemson University where he eventually became a professor (Samual Manor Martin Professor of Mathematics). He published a total of 22 works and promoted six PhD students. Family life

He died on November 7, 1981 because of cancer leaving Aurelia and five children to be married. Bibliography

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