Optimal parameters and sharp estimates of the convergence rate of the tangent expansion
... decomposition parameter and derive sharp estimates of the convergence rate for a broad class of model problems. Numerical results prove that high convergence rate can be achieved by using these values also for the problems with varying coefficients.
Vasilyeva E. A.
incomplete block decomposition, tangential decomposition, preconditioner, matrices
77-89
Tangential decomposition and its generalization
... Паде // Математическое моделирование. 2006. Т. 1, № 4. С. 89—99.
6. Stoer J., Bulirsch R. Introduction to numerical analysis. N. Y., 1992.
7. Baker G. A. P. Graves-Morris Pad'e Approximants. L., 1981
Buzdin A., Vasilyeva E.
large system of linear equations, block decomposition, block-tridiagonal matrix, frequency-filtering method
161-169