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Spectral Analysis of Unitary Band Matrices

✍ Scribed by Olivier Bourget; James S. Howland; Alain Joye


Publisher
Springer
Year
2003
Tongue
English
Weight
266 KB
Volume
234
Category
Article
ISSN
0010-3616

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πŸ“œ SIMILAR VOLUMES


Analysis of Algorithms for Orthogonalizi
✍ Roy Mathias πŸ“‚ Article πŸ“… 1996 πŸ› John Wiley and Sons 🌐 English βš– 995 KB

We consider the problem of computing u k = Qk uk-1 (where U0 is given) in finite precision (CM = machine precision) where U0 and the Qi are known to be unitary. The problem is that fik, the computed product may not be unitary, so one applies an O(n2) orthogonalizing step after each multiplication to