Geir Dahl

Geir Dahl is a Professor in the Department of Mathematics at the University of Oslo, specializing in Differential Equations and Computational Mathematics. His research focuses on combinatorial matrix theory, including majorization order, polytopes, and (0,1)-matrices. He teaches courses such as Linear Algebra, Linear Optimization, and Mathematical Optimization. Dahl's work spans topics like doubly stochastic matrices, spectral graph theory, and applications in tennis rankings. His extensive publications include studies on permutation polytopes, matrix classes, and combinatorial optimization. He is actively involved in the Computational Mathematics research group and has collaborated extensively with researchers like Richard Brualdi.