of Computer Science) Tove Stang Dahl (Professor of Law; pioneer of feminist jurisprudence) Nancy D. Erbe (Visiting Professor 2000–2001. Professor of Conflict Resolution and Fulbright Scholar) Ivar Giæver (Professor of Physics) Johan Galtung (Professor of Peace and Conflict Studies; founder of the field) Victor Goldschmidt (Professor of Mineralogy and Petrography, founder of geochemistry and crystal chemistry) Erik Grønseth (Professor of Sociology; founder of Norwegian family sociology) Francis Hagerup (Professor of Law) Viggo Hagstrøm (Professor of Law) Odd Hassel (Professor of Chemistry) Harriet Holter (Professor of Social Psychology) Trygve Haavelmo (Professor of Economics) Thomas Mathiesen (Professor of Sociology) Fridtjof Nansen (Professor of Zoology) Arnved Nedkvitne (Professor of History) Arne Næss (Professor of Philosophy; founder of deep ecology) Kristen Nygaard (Professor of Computer Science) Trygve Reenskaug (Professor of Informatics) Vibeke Roggen (Associate Professor of Classics) Sophus Lie (Professor of Mathematics, pioneer in abstract algebra; largely created the theory of continuous symmetry) Peter Ludwig Mejdell Sylow (Professor of Mathematics) Carl Marstrander (Professor of Celtic Languages) Georg Morgenstierne (Professor of Linguistics) Alumni Niels Henrik Abel (1802–1829) – mathematician, the Abel Prize in mathematics is named in his honour Gro Harlem Brundtland – former prime minister of Norway Øyvind Ellingsen (born 1975) – Norwegian cardiologist Elisabeth Erke (born 1962) – Norwegian Sami educator and politician Åse Kleveland – Norwegian singer and politician Fridtjof Nansen – Arctic explorer and Nobel Prize laureate Harrison Schmitt – former American astronaut, walked on the Moon during Apollo 17 Petrit Selimi – deputy minister of foreign affairs of Kosovo Baldwin Spencer – prime minister of Antigua and Barbuda Jens Stoltenberg – former prime minister of Norway, current secretary general of NATO Andreas Thorud – footballer Olav Torgersen (1907 – 1978) – physician, pathologist and academic Thor Heyerdahl – ethnographer, adventurer Kåre Willoch – former prime minister of Norway Ingeborg Hoff – Norwegian linguist, who later was Senior Archivist at the Norwegian Dialect Archive Ernst S. Selmer - mathematician and cryptologist Atle Selberg - mathematician and Fields Medal winner Rectors Seal The seal of the University of Oslo features Apollo with the Lyre, and dates from 1835. The seal has been redesigned several times, most recently in 2009. Fees Like all public institutions of higher education in Norway, the university does not charge tuition fees. However, a small fee of (roughly ) per term goes to the student welfare organisation Foundation for Student Life in Oslo, to subsidise kindergartens, health services,