کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4645251 1632198 2014 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A note on superoptimal generalized circulant preconditioners
موضوعات مرتبط
مهندسی و علوم پایه ریاضیات ریاضیات محاسباتی
پیش نمایش صفحه اول مقاله
A note on superoptimal generalized circulant preconditioners
چکیده انگلیسی

Circulant matrices can be effective preconditioners for linear systems of equations with a Toeplitz matrix. Several approaches to construct such preconditioners have been described in the literature. This paper focuses on the superoptimal circulant preconditioners proposed by Tyrtyshnikov, and investigates a generalization obtained by allowing generalized circulant matrices. Numerical examples illustrate that the new preconditioners so obtained can give faster convergence than available preconditioners based on circulant and generalized circulant matrices.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Numerical Mathematics - Volume 75, January 2014, Pages 188–195
نویسندگان
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