Background
Hanfried Lenz was the eldest son of Fritz Lenz an influential German geneticist, who is associated with Eugenics and hence also with the Nazi racial policies during the Third Reich.
mathematician university professor
Hanfried Lenz was the eldest son of Fritz Lenz an influential German geneticist, who is associated with Eugenics and hence also with the Nazi racial policies during the Third Reich.
Doctor of Philosophy, Technology University Munich, 1951. Habilitation, Technology University Munich, 1953. Doctor (honorary) in Mathematics, Technology University Munich, 1991.
He started to study mathematics and physics at the University of Tübingen, but interrupted his studies from 1935-1937 to do his military service. After that he continued to study in Munich, Berlin and Leipzig. He started to work as a math and physics teacher in Munich and in 1949 he became an assistant at the Technical University of Munich.
He received his Doctor of Philosophy in 1951 and his Habilitation in 1953.
He worked as a lecturer until he became an associate professor in 1959. In 1969 he finally became a full professor at the Free University of Berlin and worked there until his retirement in 1984.
Later, partially due to being alienated by the student movement of the "60s, his leanings became more conservative again and in 1972 he left the Social Democratic Party of Germany to join the Christian Democratic Union. Hanfried Lenz is known for his work on the classification of projective planes and in 1954 he showed how one can introduce affine spaces axiomatically without constructing them from projective spaces or vector spaces.
This result is now known as the theorem of Lenz.
During his later years he also worked in the area of combinatorics and published a book on design theory (together with Dieter Jungnickel and Thomas Beth).
Social Democratic Party of Germany, Christian Democratic Union, All-German People"s Party.
He was also politically active and in connection with his opposition to the rebuilding of the German army in the early 50s, he became a member of the Social Democratic Party(Social Democratic Party of Germany) in 1954.
Married Helene Ranke (deceased 1994). Children: Ingeborg, Erich, Ilse, Karl Friedrich.