On May 1,1930 Jessen defended his thesis in Copenhagen; he subsequently elaborated his thesis into an article that was published in "Acta Mathematica" in 1934.
He later elaborated the thesis into an article that was published in "Acta Mathematica" in 1934. On May 1,1930 Jessen defended his thesis in Copenhagen.
On May 1,1930 Jessen defended his thesis in Copenhagen. He later elaborated the thesis into an article that was published in "Acta Mathematica" in 1934.
On May 1,1930 Jessen defended his thesis in Copenhagen. He later elaborated the thesis into an article that was published in "Acta Mathematica" in 1934.