Ilse Clara Franziska Ipsen is a German-American mathematician who works as a professor of mathematics at North Carolina State University.
She was formerly associate director of the Statistical and Applied Mathematical Sciences Institute, a joint venture of North Carolina State and other nearby universities.
[1] Ipsen is Founding Editor in Chief of the SIAM Book Series on Data Science.
Ipsen is the author of the book Numerical Matrix Analysis: Linear Systems and Least Squares (SIAM, 2009), an introductory graduate textbook on the sensitivity analysis of computations in linear algebra.
[3] In 2011, she became a fellow of the Society for Industrial and Applied Mathematics "for contributions to numerical linear algebra, perturbation theory, and applications.