Konrad Knopp

Konrad Hermann Theodor Knopp ( born July 22, 1882 in Berlin, † April 20, 1957 in Annecy ) was a German mathematician who worked primarily with function theory and analysis ( especially expansions ).

Life

Knopp's father Paul Knopp (1845-1904) was an entrepreneur in Pommern. Knopp attended school in Berlin and then studied in Lausanne (1901 ) and Berlin, where he heard with Ferdinand Georg Frobenius, Friedrich Schottky, Edmund Landau, Hermann Amandus Schwarz and Isay Schur, 1906, his teacher graduated in and in 1907 received his doctorate in Schottky ( "Limits of rows in the approach to the convergence limit, " he proved that the limiting process of the Hölder implied by Cesàro ). 1908/9 he went - after he began a clerkship training - to Japan, where he taught in Nagasaki at the Graduate School and visited on the way back to Germany, India and China. After his marriage in 1910 he went to China in the German Colony ( " reserve" ) Tsingtao, where he taught at the German-Chinese Academy. After returning in 1911, he taught in Berlin at the Military Technical Academy and the Military Academy and at the same time wrote his habilitation. During the First World War he served as a reserve officer, but was released in 1914 ( Iron Cross ) after being wounded in the fall and taught at the University of Berlin. In 1915 he became associate professor in 1919 and full professor at the Albertus University of Königsberg. 1926 until his retirement in 1950 he was a professor in Tübingen. He died of a stroke in Annecy, France.

Knopp was known primarily for his textbooks "Theory and application of infinite series " (basic teachings of the mathematical sciences, Springer, 1922), the processing of Hans von Mangoldts " Higher Mathematics" (abbreviated as Mangoldt / Knopp known ) and especially his " elements of the theory of Functions " Goschen ( first in 1926, 2 volumes and 2 task volumes). His books on function theory are widely used in English translation ( at Dover ) and are widely used. They are considered one of the best introductions to the area. Knopp and others founded 1918 " Mathematische Zeitschrift ". He was a corresponding member of the Bavarian Academy of Sciences. He was Dr. rer. nat. h c ..

In 1910 he married the painter Gertrude Kressner ( 1879-1974 ), with whom he had a son and a daughter.

Works

• Theory and application of infinite series, 6th Edition 1996, Springer, ISBN 3-540-59111-7, edition of 1964 online here
• Function theory, Vol.1 basis of the general theory of analytic functions, 13th edition 1976, Vol 2 Applying and extending the general theory, 13th Edition 1981, de Gruyter ( Sammlung Goschen )
• Collection of problems on complex analysis, Vol.1, 8th edition 1977, Vol.2, 6th Edition 1964, de Gruyter ( Sammlung Goschen )
• Mathematics as a cultural activity, Mathematical Intelligencer Vol 7, 1985, No.1
• With Mangoldt from: Advanced Mathematics - an introduction for students for self-study, 3 vols, 17th edition ( in Vol 1) 1990, Hirzel Verlag, (Vol. 1 numbers, functions, limits, analytic geometry, algebra, set theory, Bd .2 differential calculus, infinite series, elements of differential geometry and function theory, Bd.3 integral calculus and its application, function theory, differential equations, Volume 4 by Friedrich deletion: set theory, Lebesgue measure and integral, topological spaces, vector spaces, functional analysis, integral equations )