On Copositive Approximation in Spaces of Continuous Functions Ⅱ:The Uniqueness of Best Copositive Approximation  

作　　者：Aref K. Kamal 

机构地区：[1]Department of Mathematics and Statistics, S. Q. University, P.O. Box 36 AI Khoudh123 Muscat, Sultanate of Oman

出　　处：《Analysis in Theory and Applications》2016年第1期20-26,共7页分析理论与应用（英文刊）

摘　　要：This paper is part II of ＂On Copositive Approximation in Spaces of Contin- uous Functions＂. In this paper, the author shows that if Q is any compact subset of real numbers, and M is any finite dimensional strict Chebyshev subspace of C （Q）, then for any admissible function f ∈ C（Q）／M, the best copositive approximation to f from M is unique.This paper is part II of ＂On Copositive Approximation in Spaces of Contin- uous Functions＂. In this paper, the author shows that if Q is any compact subset of real numbers, and M is any finite dimensional strict Chebyshev subspace of C （Q）, then for any admissible function f ∈ C（Q）／M, the best copositive approximation to f from M is unique.

关 键 词：Strict Chebyshev spaces best copositive approximation change of sign. 

分 类 号：O241.5[理学—计算数学]