Best constants of harmonic approximation on classes associated with the Laplace operator
نویسنده
چکیده
We compute the best constants of approximation by entire functions of spherical type and by trigonometric polynomials of spherical degree on classes of functions f satisfying the condition ‖ f ‖Lp 1, where p=1 or 2 and is the Laplace operator. © 2007 Elsevier Inc. All rights reserved.
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عنوان ژورنال:
- Journal of Approximation Theory
دوره 150 شماره
صفحات -
تاریخ انتشار 2008