✦ LIBER ✦
The Elimination of Lanczos Ghosting Effects by MINRES Filter Diagonalization
✍ Scribed by Hua-Gen Yu; Sean C. Smith
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 186 KB
- Volume
- 143
- Category
- Article
- ISSN
- 0021-9991
No coin nor oath required. For personal study only.
✦ Synopsis
A recently developed filter diagonalization technique (Ber. Bunsenges. Phys. Chem. 101, 400, 1997), based on the optimal approximation of the Green operator in a finite Lanczos subspace, is investigated in relation to its ability to avoid the phenomenom of ghosting which complicates the interpretation of the regular Lanczos spectrum as the order of the subspace is increased. The origin of this potentially useful property of the algorithm is explained with reference to one-and two-dimensional applications.