He often lectured in the Danish Mathematical Society, he was an editor of Tidsskrift for Mathematik from 1883 to 1889, and he also reviewed papers written in Danish for the Jahrbuch über die Fortschritte der Mathematik.
Siya madalas lectured sa Danish matematiko Society, siya ay isang editor ng Tidsskrift para sa Mathematik 1883-1889, at siya rin susuriin mga papeles na nakasulat sa Danish para sa Jahrbuch über die Fortschritte der Mathematik.