After Mittag-Leffler 's death in 1927, Carleman, who was considered to be the top Swedish mathematician of the time, was appointed as the first director of the Mittag-Leffler Institute.
Pagkatapos Mittag-Leffler 's kamatayan sa 1927, Carleman, na siyang itinuturing na ang itaas Swedish dalubbilang ng oras, ay hinirang bilang unang direktor ng Mittag-Leffler Institute.