کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9511816 | 1342136 | 2005 | 15 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the necessity of negative coefficients for operator splitting schemes of order higher than two
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
ریاضیات
ریاضیات محاسباتی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: On the necessity of negative coefficients for operator splitting schemes of order higher than two On the necessity of negative coefficients for operator splitting schemes of order higher than two](/preview/png/9511816.png)
چکیده انگلیسی
In this paper we analyse numerical integration methods applied to differential equations which are separable in solvable parts. These methods are compositions of flows associated with each part of the system. We propose an elementary proof of the necessary existence of negative coefficients if the schemes are of order, or effective order, p⩾3 and provide additional information about the distribution of these negative coefficients. It is shown that if the methods involve flows associated with more general terms this result does not necessarily apply and in some cases it is possible to build higher order schemes with positive coefficients.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Numerical Mathematics - Volume 54, Issue 1, June 2005, Pages 23-37
Journal: Applied Numerical Mathematics - Volume 54, Issue 1, June 2005, Pages 23-37
نویسندگان
Sergio Blanes, Fernando Casas,