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He enlisted in the Austro-Hungarian cavalry in the First World War and spent some time in the Air force where he met von Mises.
In 1921 he moved to Berlin where he became a friend of Schur and worked with von Mises and Schmidt. He cooperated with Pólya in bringing out a joint Problem Book: Aufgaben und Lehrsätze aus der Analysis , vols I and II (Problems and Theorems in Analysis ) (1925) which has since gone through many editions and which has had an enormous impact on later generations of mathematicians.
In 1926 he moved to Königsberg to succeed Knopp as professor. He stayed there until 1934 when the pressure on him as a Jew forced him to move to the USA where he found a post at Washington University in St Louis, Missouri. In 1938 he moved to Stanford where he remained for the rest of his working life.
Szegö's most important work was in the area of Orthogonal Polynomials and Toeplitz matrices. He produced over 130 research articles as well as several influential books.
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