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An implementation of a divide and conquer algorithm for the unitary eigen problem

✍ Scribed by Ammar, G. S.; Reichel, L.; Sorensen, D. C.

Book ID
117991834
Publisher
Association for Computing Machinery
Year
1992
Tongue
English
Weight
917 KB
Volume
18
Category
Article
ISSN
0098-3500

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An implementation of a divide and conque
An implementation of a divide and conquer algorithm for the unitary eigen problem
✍ Ammar, G. S.; Reichel, L.; Sorensen, D. C. πŸ“‚ Article πŸ“… 1992 πŸ› Association for Computing Machinery 🌐 English βš– 917 KB

We present a FORTRAN implementation of a divide-and-conquer method for computing the spectral resolution of a unitary upper Hessenberg matrix __H__ . Any such matrix __H__ of order __n__ , normalized so that its subdiagonal elements are nonnegative, can be written as a product of __n__ -1\* Givens m