StÃÂ¥l Aanderaa (born 1 February 1931) is a Norwegian mathematician.
Aanderaa was born in Beitstad. He completed the mag.scient. degree in 1959 and his doctorate at Harvard University in 1966. He was a professor at the University of Oslo from 1978 to his retirement in 2001.
Aanderaa is a member of the Norwegian Academy of Science and Letters.
Aanderaa is one of the namesakes of the AanderaaâÂÂKarpâÂÂRosenberg conjecture.