INSTITUTE FOR MATHEMATICAL SCIENCES|
UNIVERSITY OF COPENHAGEN
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General description of the collection
A short biography of Jessen
Børge Jessen (1907-1993) was born in Copenhagen and he also studied here.
His university study, with mathematics as the major subject, lasted 1925-29.
After his magisterkonferens in mathematics he wrote a doctoral dissertation,
which was defended in 1930. Already during his year of study Jessen had
started a collaboration with Harald Bohr. This was continued during the
1930s and 1940s. They collaborated on the zeta function and almost
periodic functions. In his early career Jessen went on study trips abroad.
He became docent at the Royal Veterinary School in 1930 and when Bonnesen
died in 1935 he succeeded him as professor in descriptive geometry at
the Polytechnic (Polyteknisk Læreanstalt). In 1942 he succeeded Hjelmslev
as professor at the University of Copenhagen and this position he kept
until his retirement in 1977. In 1950s his mathematical interest shifted
to the partition problem of polyhedras. Jessen had a significant
position in Danish science after World War II. He was president of the
direction of the Carlsberg Foundation, member of the committee of the
Rask-Ørsted Foundation, a leading figure in the erection of the H. C.
Ørsted Institute (the new institute for mathematics, physics and
chemistry in Copenhagen erected in the 1960s), involved in the reform
of the university studies and member of the committee of the Danish
Mathematical Society. He was also member of the committee of the
International Mathematical Union for a few years when it was reestablished
in the 1950s.
A survey of the content of the collection
Jessen's material was very well-ordered by himself in folders
and except for a few changes this ordering of the material has been
kept in the Archive's collection.
In general the material is first sorted according to subject and then
either chronological or alphabetical (or both). Because of the significant
size of the inventory it has been divided into three parts on separate
home pages. Remark that not everything is available in an English
Correspondence with institutions etc.
Scientific manuscripts and notes (chronological)
Undated scientific manuscripts
Manuscript for a book on almost periodic functions
Manuscript on a book on the theory of measure and integration
Reprints of publications
Reforms of the studies 1943-60
The commission of education 1956-59
The erection of the H. C. Ørsted Institute
International Council of Scientific Unions
International Mathematical Union
Partipation in congresses and anniversaries
Miscellaneous (sorted according to subject)
Not standard boxes