Optimal parameters for consequences of tangential and two-frequency decompositions
... choosing quasioptimal parameters for consequences of tangential and two-frequencies decompositions based on analysis of model problems is developed. It’s convergence rate is better than ADI’s convergence rate in commutational case..
. Tangential decomposition // Computing (1998) 61:257–276.
. Buzdin К., Wittum G.
Two-Frequency Decomposition // Numerische Mathematik. 2004. Vol. 97. P. 269–295.
Tangential frequency filtering decompositions for symmetric matrices // Numer....
Optimal parameters and sharp estimates of the convergence rate of the tangent expansion
... 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