Jakob Nielsen (mathematician)

Jakob Nielsen (15 October 1890 in Mjels, Als – 3 August 1959 in Helsingør) was a Danish mathematician known for his work on automorphisms of surfaces.

[1] He was born in the village Mjels on the island of Als in North Schleswig, in modern-day Denmark.

After the war, in the spring of 1919, Nielsen married Carola von Pieverling, a German medical doctor.

[2] During World War II some efforts were made to bring Nielsen to the United States as it was feared that he would be assaulted by the Nazis.

In 1951 Nielsen became professor of mathematics at the University of Copenhagen, taking the position vacated by the death of Harald Bohr.