Polynomial of Best Uniform Approximation to and Smoothing in Two-level Methods
نویسندگان
چکیده
منابع مشابه
Polynomial of Best Uniform Approximation to 1/x and Smoothing in Two-level Methods
We derive a three-term recurrence relation for computing the polynomial of best approximation in the uniform norm to x−1 on a finite interval with positive endpoints. As application, we consider two-level methods for scalar elliptic partial differential equation (PDE), where the relaxation on the fine grid uses the aforementioned polynomial of best approximation. Based on a new smoothing proper...
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ژورنال
عنوان ژورنال: Computational Methods in Applied Mathematics
سال: 2012
ISSN: 1609-4840,1609-9389
DOI: 10.2478/cmam-2012-0026