Best constant approximants in Lorentz spaces

[摘要] In this paper, we give a characterization of best constant approximants in Lorentz spaces L-w,L-q, 1 less than or equal to q < infinity, and we establish a way to obtain the best constant approximants maximum and minimum. We also study monotony of the best constant approximation operator. (C) 2004 Elsevier Inc. All rights reserved.

[发布日期] 2004-12-01

[关键词] best constant approximants;Lorentz space;monotony