Titlebook: Eigenvalue Problems: Algorithms, Software and Applications in Petascale Computing; EPASA 2015, Tsukuba, Tetsuya Sakurai,Shao-Liang Zhang,Ta

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Jürgen Friedrichs,Ulrich SchwingesIn this paper we first briefly summarize some key achievements that have been made within this project..Then we focus on a projection-based eigensolver with polynomial approximation of the projector. This eigensolver can be used for computing hundreds of interior eigenvalues of large sparse matrices

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,Beispiele für die Stoffauswahl,tice QCD). The Sakurai-Sugiura (SS) method (Sakurai and Sugiura, J Comput Appl Math 159:119, 2003) is employed here, which is based on a contour integral, allowing us to obtain desired eigenvalues located inside a given contour of the complex plane. We apply the method here to calculating several lo

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Uwe-Peter Tietze,Manfred Klika,Hans Wolperss useful in a number of applications. It can also be used to develop an efficient spectrum-slicing strategy to compute many eigenpairs of a Hermitian matrix. Our method is based on the Lanczos- and Arnoldi-type of iterations. We show that with a properly defined preconditioner, only a few iterations

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https://doi.org/10.1007/978-3-322-84092-9h predator preys on two or more species is an extension; those involving summations and products of nonlinear terms are referred to as summation-type and product-type hLV systems, respectively. Time-discretizations of these systems are considered in the study of integrable systems, and have been sho

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https://doi.org/10.1007/978-3-658-16786-8the Shifted Block BiCGGR method. This method is based on the shift-invariance property of Block Krylov subspaces. Using this property, the Shifted systems can be solved in the process of solving the Seed system without matrix-vector multiplications. The Shifted Block BiCGGR method can generate high

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Titlebook: Eigenvalue Problems: Algorithms, Software and Applications in Petascale Computing; EPASA 2015, Tsukuba, Tetsuya Sakurai,Shao-Liang Zhang,Ta

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