A Reformulated Low‐Rank ADI Iteration with Explicit Residual Factors
A Reformulated Low‐Rank ADI Iteration with Explicit Residual Factors
复制标题
具有显式残差因子的重新表述的低阶 ADI 迭代
DOI:
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发表时间:
2013
期刊:
影响因子:
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通讯作者:
J. Saak
中科院分区:
文献类型:
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作者:
P. Benner;P. Kürschner;J. Saak
Based on our recent findings [1, 2] regarding the low‐rank ADI iteration for large‐scale Lyapunov equations, we propose a mathematically equivalent formulation of the LR‐ADI whose iteration is directly connected to low rank factors of the Lyapunov residual. If complex shift parameters occur and are handled efficiently [1], this reformulation is slightly more efficient from a computational point of view, since it guarantees that the right hand sides of all linear systems that need to be solved are real. (© 2013 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)