Videnskab. Avec un résumé en francais. Forh.Dansk Vid.Selskab 1917, pp.199-369. References External links 1839 births 1920 deaths People from Esbjerg Municipality Danish mathematicians Members of the Royal Danish Academy of Sciences and Letters Members of the French Academy of Sciences Danish historians of mathematics University of Copenhagen alumni Academic staff of the University of Copenhagen Rectors of the University of Copenhagen Members of the Royal Society of Sciences in Uppsala