Redundancy techniques and fast algorithms for a special large linear system

Computing ◽  
1977 ◽  
Vol 18 (4) ◽  
pp. 317-327 ◽  
Author(s):  
D. K. Lam ◽  
A. Wouk

1988 ◽  
Vol 22 (2) ◽  
pp. 41-49 ◽  
Author(s):  
Brent Gregory ◽  
Erich Kaltofen


2021 ◽  
Vol 37 ◽  
pp. 402-415
Author(s):  
Shinya Miyajima

Fast algorithms are proposed for calculating error bounds for a numerically computed Perron root and vector of an irreducible nonnegative matrix. Emphasis is put on the computational efficiency of these algorithms. Error bounds for the root and vector are based on the Collatz--Wielandt theorem, and estimating a solution of a linear system whose coefficient matrix is an $M$-matrix, respectively. We introduce a technique for obtaining better error bounds. Numerical results show properties of the algorithms.



2021 ◽  
Vol 396 ◽  
pp. 125859
Author(s):  
Yaru Fu ◽  
Xiaoyu Jiang ◽  
Zhaolin Jiang ◽  
Seongtae Jhang


1977 ◽  
Vol 124 (8) ◽  
pp. 725
Author(s):  
P. Linga Reddy ◽  
B.S. Rao


Author(s):  
R. Glüge ◽  
H. Altenbach ◽  
S. Eisenträger

AbstractWe use the algebraic orthogonality of rotation-free and divergence-free fields in the Fourier space to derive the solution of a class of linear homogenization problems as the solution of a large linear system. The effective constitutive tensor constitutes only a small part of the solution vector. Therefore, we propose to use a synchronous and local iterative method that is capable to efficiently compute only a single component of the solution vector. If the convergence of the iterative solver is ensured, i.e., the system matrix is positive definite and diagonally dominant, it outperforms standard direct and iterative solvers that compute the complete solution. It has been found that for larger phase contrasts in the homogenization problem, the convergence is lost, and one needs to resort to other linear system solvers. Therefore, we discuss the linear system’s properties and the advantages as well as drawbacks of the presented homogenization approach.



1981 ◽  
Vol 64 (10) ◽  
pp. 9-17 ◽  
Author(s):  
Toshimichi Saito ◽  
Hiroichi Fujita


1990 ◽  
Vol 137 (5) ◽  
pp. 322
Author(s):  
M. Bettayeb ◽  
U.M. Al-Saggaf


1991 ◽  
Vol 1 (9) ◽  
pp. 1217-1227 ◽  
Author(s):  
A. A. Bakasov ◽  
N. V. Bakasova ◽  
E. K. Bashkirov ◽  
V. Chmielowski
Keyword(s):  


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