Roland W Freund

Regular Faculty
Scientific computing
Ph.D., 1983, University of Wurzberg, Germany
Refereed publications: Via Math Reviews

Web Page:
Office: MSB 2140
Current Courses: MAT 168
Office Hours: M 1:45 - 3:45 pm
Phone: 752-1660


My current research interests are mainly in numerical linear algebra, in particular in large-scale matrix computations and sparse matrix computations, dimension reduction of dynamical systems, and large-scale optimization problems. Much of my research is motivated by computational problems arising in science and engineering; examples include VLSI circuit simulation and the mathematical modeling and simulation of fiber-optic communication systems.

Selected Publications

  • [1] R.W. Freund and N.M. Nachtigal, "QMR: a quasi-minimal residual method for non-Hermitian linear systems," Numer. Math., 60: 315-339, 1991.

  • [2] R.W. Freund, G.H. Golub, and N.M. Nachtigal, "Iterative solution of linear systems," Acta Numerica 1992: 57-100, 1992.

  • [3] R.W. Freund, "A transpose-free quasi-minimal residual algorithm for non-Hermitian linear systems", SIAM J. Sci. Comput., 14: 470-482 (1993).

  • [4] P. Feldmann and R.W. Freund, "Efficient linear circuit analysis by Pade approximation via the Lanczos process," IEEE Trans. Computer-Aided Design, 14: 639-649, 1995.

  • [5] R.W. Freund, "Model reduction methods based on Krylov subspaces," Acta Numerica, 2003: 267-319, 2003.

    Last updated: 2008-02-12