A perturbation technique to compute initial amplitude and phase for the Krylov-Bogoliubov-Mitropolskii method
نویسندگان
چکیده
منابع مشابه
The Krylov - Bogoliubov and Galerkin Methodsfor
1 P. YU ET AL. KB AND GALERKIN METHODS 2 SUMMARY The objective of this paper is to consider the dynamic motions of second order, weakly nonlinear, discrete systems. The main attention is focused on a comparison, for such systems, of the method of Krylov-Bogoliubov (KB) and an enhanced Galerkin (EG) method which produce seemingly diierent solutions. Despite the apparent diierences, the two metho...
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We present an acceleration of the well-established Krylov-Ritz methods to compute the sign function of large complex matrices, as needed in lattice QCD simulations involving the overlap Dirac operator at both zero and nonzero baryon density. Krylov-Ritz methods approximate the sign function using a projection on a Krylov subspace. To achieve a high accuracy this subspace must be taken quite lar...
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ژورنال
عنوان ژورنال: Tamkang Journal of Mathematics
سال: 2012
ISSN: 2073-9826,0049-2930
DOI: 10.5556/j.tkjm.43.2012.853