Hans-Jürgen Treder

Hans-Jürgen Treder (born 4 September 1928 in Berlin; died 18 November 2006 in Potsdam) was a German theoretical physicist and in the GDR, specializing in general relativity (and its extensions), astrophysics, and cosmology.

Immediately after earning a Habilitation in 1962, in 1963 he became professor of theoretical physics at Humboldt University of Berlin and director of the Academy Institute of Pure Mathematics.

He not only made it a center of theoretical gravitational physics, but also included magnetohydrodynamics (MHD, in collaboration with Max Steenbeck) - which played an important role in astrophysics on a par with the gravitational theory in the model training - and geophysics (in collaboration with Hans Ertel), which was formative in Potsdam later.

He has published in the last years of his life with his friend, the geophysicist Wilfried Schröder, many works in the Earth and space physics, including solar variability.

Calls from the West declined from Treder, he was not only an avowed Marxist, but also felt the history of science in Berlin closely connected, about which he later wrote some books.