Publications

14 results for Ralph A. Willoughby

A QL procedure for computing the eigenvalues of complex symmetric tridiagonal matrices
- - Jane K. Cullum
  - Ralph A. Willoughby
- 1996
- SIMAX
Paper
A generalized nonsymmetric Lanczos procedure
- - Jane Cullum
  - Wolfgang Kerner
  - et al.
- 1989
- Computer Physics Communications
Paper
A survey of Lanczos procedures for very large real 'symmetric' eigenvalue problems
- - Jane Cullum
  - Ralph A. Willoughby
- 1985
- J. Comput. Appl. Math.
Paper
LANCZOS PROCEDURE FOR THE MODAL ANALYSIS OF VERY LARGE NONSYMMETRIC MATRICES.
- - J. Cullum
  - R. Willoughby
- 1983
- CDC 1983
Conference paper
A Sparsity-Based Technique for Identifying Slow-Coherent Areas in Large Power Systems
- - J.H. Chow
  - J. Cullum
  - et al.
- 1984
- IEEE Power Engineering Review
Paper
A sparsity-based technique for identifying slow-coherent areas in large power systems
- - Joe H. Chow
  - Jane Cullum
  - et al.
- 1984
- IEEE Transactions on Power Apparatus and Systems
Paper
Computing eigenvalues of very large symmetric matrices-An implementation of a Lanczos algorithm with no reorthogonalization
- - Jane Cullum
  - Ralph A Willoughby
- 1981
- Journal of Computational Physics
Paper
The Lanczos phenomenon-An interpretation based upon conjugate gradient optimization
- - Jane Cullum
  - Ralph A. Willoughby
- 1980
- Linear Algebra and Its Applications
Paper
On functions which preserve the class of Stieltjes matrices
- - Charles A. Micchelli
  - R. Willoughby
- 1979
- Linear Algebra and Its Applications
Paper
The inverse M-matrix problem
- - R. Willoughby
- 1977
- Linear Algebra and Its Applications
Paper