Robert Fricke
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In 1893 in Chicago, his paper ''Die Theorie der automorphen Functionen und die Arithmetik'' was read (but not by Fricke) at the International Mathematical Congress held in connection with the World's Columbian Exposition. From 1894 to 1930 Fricke was professor of Higher Mathematics at the Technische Hochschule Carolo-Wilhelmina in Braunschweig. Provided by Wikipedia