共正逼近的特征定理
Characterization Theorems for Copositive Approximations
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摘要: 运用列导数研究了较一般的n维哈尔子空间的Chebyshev共正逼近的特征定理,其中包括了共正逼近的交错定理。Abstract: The best copositive approximation of an f in Ca,b from a general n-dimen-sion Hart subspace of Ca,b is studied and some characterization theorems and an alternation theorem are given.