Ivar Stakgold (December 13, 1925 – May 29, 2018)[1] was a Norwegian-born American academic mathematician and bridge player from Newark, Delaware.[2] As the sole author of two books he specialized in boundary value problems (LCSH).[3][4]
Stakgold was born in Oslo, Norway to parents with Russian-Jewish heritage.[5][6] He studied applied mathematics at Harvard University and earned the Ph.D. in 1949 with a dissertation, The Cauchy Relations In A Molecular Theory of Elasticity, under Léon Nicolas Brillouin.[7] He was professor emeritus of mathematical sciences at the University of Delaware and a researcher at the University of California, San Diego.[8] He was a former president of the Society for Industrial and Applied Mathematics (SIAM).[3]