Wilhelm Maak

Wilhelm Maak (born August 13, 1912 in Hamburg , † June 6, 1992 in Göttingen ) was a German mathematician who dealt with almost periodic functions .

Wilhelm Maak in Göttingen 1982

Maak studied at the University of Hamburg (and in Copenhagen in 1933 with Harald Bohr ), a. a. with Erich Hecke , Emil Artin , Wilhelm Blaschke , Otto Schreier . In 1936 he received his doctorate in Hamburg under Erich Hecke ("Abstract almost periodic functions"). In 1938 he became an assistant in Heidelberg . In 1939 he completed his habilitation in Hamburg, where he became a private lecturer in 1949. In 1951/2 he became a professor at the University of Munich, succeeding Oskar Perron . In 1958 he became a professor in Göttingen , where he retired in 1977.

In his dissertation, he proved the mean value theorem of the theory of near-periodic functions on groups with the combinatorial marriage theorem, which he discovered and proved independently of Philip Hall . From the 1950s he applied the theory of almost periodic functions to semigroups and later examined them in connection with module groups. In 1951, he extended Hermann Weyl's and Leopold Kronecker's theorem of equal distribution to non-Abelian groups.

From the end of the 1930s, under the influence of Blaschke, he dealt with integral geometry.

In 1960 he was President of the German Mathematicians Association . In 1962 he was elected a full member of the Göttingen Academy of Sciences . He was a corresponding member of the Bavarian Academy of Sciences . Konrad Jacobs is one of his doctoral students .

Fonts

• Almost periodic functions. Springer, Basic Teachings of Mathematical Sciences, 1950, 1967.
• Differential and integral calculus. 4th edition. Vandenhoeck & Ruprecht, Göttingen 1969.
• Representation theory of infinite groups and almost periodic functions. In: Encyclopedia of Mathematical Sciences. 1953
• Integrals and groups. In: Annual report DMV 1935.

literature

• Burmann, Günzler, Holdgrün, Jacobs: Wilhelm Maak. In: Annual report DMV. Vol. 96, 1994, p. 76.

Individual evidence

1. ↑ Holger Krahnke: The members of the Academy of Sciences in Göttingen 1751-2001 (= Treatises of the Academy of Sciences in Göttingen, Philological-Historical Class. Volume 3, Vol. 246 = Treatises of the Academy of Sciences in Göttingen, Mathematical-Physical Class. Episode 3, vol. 50). Vandenhoeck & Ruprecht, Göttingen 2001, ISBN 3-525-82516-1 , p. 157.